InstanceOfJava: C language interview programs

C initialize an array

Posted by: saidesh Posted date: June 27, 2021 / comment : 0 C language interview programs , c programming examples for beginners

Array is collection of similar data items.
An array can hold multiple values of same type of data
In c programming language an array can be declared as datatype arrayName [ arraySize ];
In c , while declaring an array we need to specify type of array , name of array and size of the array.
One can directly initialize an array while declaring itself with some values
int arrayVariable[2]=[10,20];
int count[]=[1,2,3,4,5]
directly initialize an array of particular : count[3]=10
Let us discuss about how to initialize an array with some default values.
Using for loop or while loop we can iterate an array and by accessing each index we can assign values
If we are not initializing an array and try to print all the values then it will print some garbage values.
c initialize array of ints

#1Write a C program to declare an array and print default values

#include <stdio.h>
// write a c program to explain how to initialize an array
int main () {
int number[ 15 ];
int i,k;
for (k = 0; k < 15; k++ ) {
printf("Array[%d] = %d\n", k, number[k] );
}
getch();
}

Output:

Array[0] = -1551778920
Array[1] = -2
Array[2] = 1971427546
Array[3] = 1971495162
Array[4] = 5189464
Array[5] = 5181048
Array[6] = 2686776
Array[7] = 1971494685
Array[8] = 0
Array[9] = 0
Array[10] = 2686832
Array[11] = 200
Array[12] = 192
Array[13] = 7161720
Array[14] = 48

#2 write a C Program to initialize an array values to 0 (zeros).

Output:

Array[0] = 0
Array[1] = 0
Array[2] = 0
Array[3] = 0
Array[4] = 0
Array[5] = 0
Array[6] = 0
Array[7] = 0
Array[8] = 0
Array[9] = 0
Array[10] = 0
Array[11] = 0
Array[12] = 0
Array[13] = 0
Array[14] = 0

C program to check whether a character is vowel or consonant

Posted by: saidesh Posted date: June 20, 2021 / comment : 0 C language interview programs , c programming examples for beginners

In this program we will discuss about how to check whether a character is vowel or consonant.
In English language will be having 5 vowels and 21 consonants.
To check entered character is vowel or consonant, first Read input character from user using scanf.
There are only 5 vowels(A,E,I,O,U), so we need to check entered character is there in those 5 characters.
If it is present then we can say its an vowel, otherwise it is a consonant.
While checking we need to consider case sensitivity. So we need to check both uppercase vowels and lower case vowels.
Lets see an example program to check whether entered character is vowel or not.

Write a program to determine whether the input character is a vowel or consonant or not an alphabet

#include <stdio.h>
//write a program to determine whether the input character is a vowel or consonant or not an alphabet
//c program to check whether a character is vowel or consonant
//www.InstanceofJava.com
int main() {
char character;
int lowercaseVowel, uppercaseVowel;
printf("Enter a character ");
scanf("%c", &character);
// assigns 1
lowercaseVowel = (character == 'a' || character == 'e' || character == 'i' || character == 'o' || character == 'u');
// evaluates to 1 if variable c is a uppercase vowel
uppercaseVowel = (character == 'A' || character == 'E' || character == 'I' || character == 'O' || character == 'U');
// evaluates to 1 (true) if c is a vowel
if (lowercaseVowel || uppercaseVowel)
printf("%c is a vowel.", character);
else
printf("%c is a consonant.", character);
getch();
}

Output:

Enter a character
I
I is an vowel

Print prime numbers from 1 to 100 in c

Posted by: saidesh Posted date: June 20, 2021 / comment : 0 C language interview programs , c programming examples for beginners

Lets discuss a program on how to print prime numbers from 1 to 100.
Here by default we need to print all prime numbers from 1 to 100.
No need to ask user to enter a number because we need to end loop at 100.
Using for loop iterate from 1 to 100
Take one more loop and check each number is divisible by 1 and itself or not.
Program to print prime number between 1 to 100 in c

#1.C program to print prime numbers from 1 to 100

#include <stdio.h>
// c program to print prime numbers from 1 to 100
// www.instanceofjava.com
int main()
{
int n, i,k, count = 0;
printf("Prime numbers from 1 to 100\n");
for(i=2;i<=100;i++)
{
for(k=2;k<i;k++)
{
if(i%k==0)
break;
else if(i==k+1)
printf("%d\n",i);
}
}
getch();
}

Sum of two integers in c

Posted by: saidesh Posted date: June 20, 2021 / comment : 0 C language interview programs , c programming examples for beginners

Check here for printing an integer in c
We have 4 basic data types in c programming language
int, char, float and double
For storing numbers or integers we will use int data type.
Lets see an example program sum of two integers in c programming language.
To add two integers we need two int type variables and third variable to store result of sum of two integers.
Its a basic level example program for beginners to understand integer data types

Write a C program to add two integers / find sum of two integers in c

#include<stdio.h>
// c program to print integer using %d
// c print integer
//www.instanceofjava.com
int main()
{
//declare an integer variable
int number1, number2, sumOfTwoIntegers;
// read input from user using scanf
printf ("Enter any two integers: ");
scanf (" %d%d", &number1,&number2);
//sum of two integers in c
sumOfTwoIntegers=number1+number2;
//print the same number using %d
printf("Sum of two integers : %d", sumOfTwoIntegers);
getch();
}

Output:

Enter any two integers:
10
20
Sum of two integers : 30

Print an integer in c language

Posted by: saidesh Posted date: June 20, 2021 / comment : 0 C language interview programs , c programming examples for beginners

For declaring numbers we use int data type in c.
In order to read using scanf we use %d.
using printf we can print same variable.

#Write a C Program to print an integer

#include<stdio.h>
// c program to print integer using %d
// c print integer
//www.instanceofjava.com
int main()
{
//declare an integer variable
int number;
// read input from user using scanf
printf ("Enter an Integer: ");
scanf (" %d", &number);
//print the same number using %d
printf("You Entered : %d", number);
getch();
}

Output:

Enter an Integer: 3
You Entered : 3

Sum of even numbers in c

Posted by: saidesh Posted date: June 19, 2021 / comment : 0 C language interview programs , c programming examples for beginners

Please check this below program which prints even numbers from 1 to n.

Print even numbers in c
To print sum of even numbers from 1 to n first we need to get all the even numbers and add them.
Using for or while loop iterate from 1 to n number and get all even numbers
sum=sum+evenNumber
C program to find sum of even numbers using while loop

C program to find sum of even numbers using while loop

#include<stdio.h>
//write a program to print even numbers in c using while loop
//www.instanceofjava.com
int main()
{
// declare variables
int number,i,sum=0;
//read input from user
printf("Enter a number: ");
scanf("%d", &number);
//iterate and check if it a even number or not
i=1;
while(i<=number){
if(i%2 ==0){
printf("%d\n" ,i);
sum=sum+i;
}
i++ ;
}
printf("sum of all even numbers = %d",sum);
getch();
}

Output:

Enter a number:8
2
4
6
8
sum of all even numbers= 20

Print even numbers in c

Posted by: saidesh Posted date: June 19, 2021 / comment : 0 C language interview programs , c programming examples for beginners

Lets see how to write a c program to print even numbers using c programming.\
Its a basic example to print only even numbers
Use for loop and iterate from 1 to n.
In each iteration check if number if divisible by 2 (n%2 == 0). if yes then its a even number otherwise it is a odd number.
C program to print even numbers from 1 to n.

#include<stdio.h>
//write a program to print even numbers in c
//www.instanceofjava.com
int main()
{
// declare variables
int number,i;
//read input from user
printf("Enter a number: ");
scanf("%d", &number);
//iterate and check if it a even number or not
for (i=1; i<=number; i++){
if(i%2 ==0){
printf("%d\n" ,i);
}
}
getch();
}

Output:

Enter a number: 12
2
4
6
8
10
12

#2 print even numbers in c using while loop

Now we will try to print even numbers using while loop
Only difference is replace for with while loop
Variable initialization will be done before loop
condition will be inside while(condition)
increment or decrement will be last line of while block
Lets print even numbers using while loop from 1 to n.

#include<stdio.h>
//write a program to print even numbers in c using while loop
//www.instanceofjava.com
int main()
{
// declare variables
int number,i;
//read input from user
printf("Enter a number: ");
scanf("%d", &number);
//iterate and check if it a even number or not
i=1;
while(i<=number){
if(i%2 ==0){
printf("%d\n" ,i);
}
i++ ;
}
getch();
}

Output:

Enter a number: 20
2
4
6
8
10
12
14
16
18
20

Sum of digits of a number in c

Posted by: saidesh Posted date: June 18, 2021 / comment : 0 C language interview programs , c programming examples for beginners

To find sum of digits of a number in c , we need to get individual numbers and add those numbers.
First of all read a number from user using scanf.
Using while loop get individual number
Divide the number with 10 so we will get last digit of that number as remainder , once we get that last digit then add it to one variable and divide that number with 10 so it will become one digit less.
like this we can get all digits and add all those numbers to get sum of digits
Sum of individual digits in c program
c program to find sum of digits of a 3 digit number

correction: here n =number .

# program to find sum of digits of a number in c

#include<stdio.h> // include stdio.h
//c program to find sum of digits of a number using while loop
//write a program to find sum of digits of a number
//www.instanceofjava.com
int main()
{
// declare variables
int number, remainder, sum = 0;
//read input from user
printf("Enter a number: ");
scanf("%d", &number);
//iterate until number not equal to zero
// get individual digits and add all those digits to get sum
while(number != 0)
{
remainder = number % 10;
sum += remainder;
number = number / 10;
}
//print sum of digits in c
printf("sum = %d", sum);
getch();
}

Output:

Enter a number
123
sum = 6

C Program to find sum of two numbers

Posted by: saidesh Posted date: June 17, 2021 / comment : 0 C language interview programs , c programming language

Lets discuss a basic c program

Sum of two integers using c. This might be the first practice program for all users.
To check sum of two integers , read input from user and store in two corresponding integer variables.
Also take one more variable to store result of sum of two numbers
c= a+b
Print result using printf

#include <stdio.h>
// program to check sum of two numbers in c
// write a c program to find sum of two integers
// www.instanceofjava.com
int main()
{
int x, y, sum;
// read input from user
printf(" Please enter any two numbers: ");
scanf("%d %d", &x, &y);
// sum of two numbers
sum=x+y;
printf("Sum of %d and %d is %d", x, y, sum);
getch();
}

Output:

Please enter any two numbers
10
20
Sum of 10 and 20 is 30

Gcd of two numbers in c

Posted by: saidesh Posted date: June 17, 2021 / comment : 0 C language interview programs , c programming examples for beginners

To check GCD of two numbers first we need to read input from user. i.e ask user to enter two numbers
Store those two numbers in two integer variables
Check if number is factor of given two numbers by iterating in for loop.

#include <stdio.h>
// program to check gcd of two numbers in c
// write a c program to find gcd of two integers
// www.instanceofjava.com
int main()
{
int number1, number2, i, gcd;
// read input from user
printf(" please enter any two numbers: ");
scanf("%d %d", &number1, &number2);
for(i=1; i <= number1 && i <= number2; ++i)
{
// checking if i is divisible by both numbers / factor of both numbers
if(number1%i==0 && number2%i==0)
gcd = i;
}
printf("GCD of %d and %d is %d", number1, number2, gcd);
getch();
}

Output:

#include <stdio.h>
// Function to compute Greatest Common Divisor using Euclidean Algorithm
int gcd(int a, int b) {
while (b != 0) {
int temp = b;
b = a % b;
a = temp;
}
return a;
}
int main() {
int num1, num2;
// enter two numbers from the user
printf("Enter two numbers to find their GCD: ");
scanf("%d %d", &num1, &num2);
// Ensure numbers are positive
if (num1 < 0) num1 = -num1;
if (num2 < 0) num2 = -num2;
// Calculate and display the GCD
int result = gcd(num1, num2);
printf("The GCD of %d and %d is: %d\n", num1, num2, result);
return 0;
}

Explanation:

Input:
- The user enters two numbers.
Logic:
- The findGCD function uses the Euclidean algorithm:
  - Replace $a$ with $b$ and $b$ with $a \% b$ until $b = 0$ .
  - The final value of $a$ is the GCD.
Output:
- The program prints the GCD of the two input numbers.

C program to check whether the triangle is right angled triangle

Posted by: saidesh Posted date: June 16, 2021 / comment : 1 C language interview programs , c programming examples for beginners

c program to check whether the triangle is right angled triangle

To check right angle triangle or not first we need to check sum of all three angles
If sum of all three angles is 180 then we it should satisfy second condition also
Second condition is on of the angle should be 90.
if both the conditions are passed then we can say it is a right angle triangle.
Now lets write a c program to check triangle is right angle triangle or not.

#include<stdio.h>
// write a c program too check traingle is right angle triasngle or not
//www.instanceofjava.com
int main()
{
int angle1,angle2,angle3;
printf("Enter Three Angles of Triangle");
printf("\n-------------------------------\n");
printf("Enter Angle1 : ");
scanf("%d", &angle1);
printf("\nEnter Angle2 : ");
scanf("%d",&angle2);
printf("\nEnter Angle2 : ");
scanf("%d",&angle3);
printf("--------------------------------\n");
if(angle1+angle2+angle3==180)
{
if(angle1==90 || angle2==90 || angle3==90)
{
printf("\nTriangle is Right Angle Triangle\n"); //
}
}
else
{
printf("\nIts Not a Triangle ");
}
getch();
}

Write a c program to check a number is palindrome or not:

Posted by: saidesh Posted date: June 16, 2021 / comment : 0 C language interview programs , c programming examples for beginners

If reverse number of a number is same then we can say its a palindrome number
we already know logic to reverse a number using remainder logic
read input from the user and store it in a variable
check reverse number of given number
compare original number and reverse number if both are same then we can say it's a palindrome number
C Program to Check Whether a Number is Palindrome or Not

Write a c program to check a number is palindrome or not:

#include <stdio.h>
int main() {
int n, revnumber = 0, ramindernum, number;
printf("Enter number: ");
scanf("%d", &n);
number = n;
// reversed integer is stored in reversedN
while (n != 0) {
ramindernum = n % 10;
revnumber = revnumber * 10 + ramindernum;
n /= 10;
}
// if number and revnumber are same then its a palindrome
if (number == revnumber)
printf("%d is a palindrome.", number);
else
printf("%d is not a palindrome.", number);
getch();
}

Output:

C program to print pyramid pattern of numbers

Posted by: saidesh Posted date: June 15, 2021 / comment : 0 C language interview programs , c programming language

#1: C program to print pyramid pattern of n stars

#include <stdio.h>
//c program to print pyramid pattern of numbers
// www.instanceofjava.com
int main(){
int number,k,m;
printf("Number of lines of star pattern ");
scanf("%d", &number);
printf("\n");
for( k = 1; k <= number; k++ )
{
for( m = 1; m <= k; m++)
{
printf("*");
}
printf("\n");
}
getch();
}

Output:

#2: C program to print pyramid pattern of n Numbers

#include <stdio.h>
//c program to print pyramid pattern of numbers
// www.instanceofjava.com
//pyramid pattern in c
//write a c
program to print following pattern
int main(){
int number,k,m;
printf("Number of lines of star pattern ");
scanf("%d", &number);
printf("\n");
for( k = 1; k <= number; k++ )
{
for( m = 1; m <= k; m++)
{
printf("%-5d ", m);
}
printf("\n");
}
getch();
}

Output:

Switch case in c example program

Posted by: Instanceofjava Posted date: July 09, 2019 / comment : 0 C language interview programs

switch case in c programming questions
switch case with do you want to continue in c
A switch case is a control statement in C that allows you to choose between several different options based on the value of a particular expression.

C has a built-in multi-way decision statement known as a switch. It is a keyword we can select a single option from multiple options. The switch is having expression; each and every option is known as case and must be followed by colon.
Each and every case ends with break statement.
The last case is default even that will have break.

The break is a keyword. Each and every case ends with break statement

SYNTAX:-

switch(expression)

{

case value-1 :block-1 break;

case value-2 :block-2 break;

case value-3 :block-3 break;

.........

default :default-block break;

}

Here is an example of how to use a switch case in a C program:

#1; switch case in c programming questions

# include <stdio.h>
void main() {
char operator;
double a,b;
printf("Enter an operator (+, -, *,): ");
scanf("%c", &operator);
printf("Enter two numbers ");
scanf("%lf %lf",&a, &b);
switch(operator)
{
case '+':
printf("%.1lf + %.1lf = %.1lf",a, b, a + b);
break;
case '-':
printf("%.1lf - %.1lf = %.1lf",a, b, a - b);
break;
case '*':
printf("%.1lf * %.1lf = %.1lf",a, b, a * b);
break;
case '/':
printf("%.1lf / %.1lf = %.1lf",a, b, a / b);
break;
default:
printf("Error! operator is not correct");
}
}

Output:

Enter an operator (+, -, *,): +
Enter two numbers 12
12
12.0 + 12.0 = 24.0
Process returned 18 (0x12) execution time : 7.392 s
Press any key to continue.

In the below example, the program prompts the user to enter a number and then uses a switch case to determine what to do based on the value of the number. If the user enters 1, the program will print "You entered 1.
" If the user enters 2, the program will print "You entered 2," and so on. If the user enters a value that is not covered by any of the cases, the default case will be executed.

C program to insert an element in an array

Posted by: Instanceofjava Posted date: September 03, 2017 / comment : 1 C language interview programs

Program to insert an element in an array at a given position
C program to insert an element in an array without using function

Program #1: Write a c program to insert an element in array without using function

#include <stdio.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
int insarray[100], pos, c, n, value;
printf("Enter number of elements of array\n");
scanf("%d", &n);
printf("Enter all %d elements\n", n);
for (c = 0; c < n; c++)
scanf("%d", &insarray[c]);
printf("Enter the specific position where you wish to insert an element in array\n");
scanf("%d", &pos);
printf("Enter the value to insert\n");
scanf("%d", &value);
for (c = n - 1; c >= pos - 1; c--)
insarray[c+1] = insarray[c];
insarray[pos-1] = value;
printf("Resultant array is\n");
for (c = 0; c <= n; c++)
printf("%d\n", insarray[c]);
getch();
}

Output:

C program to delete an element in an array

Posted by: Instanceofjava Posted date: September 03, 2017 / comment : 0 C language interview programs

Write a c program to insert and delete an element in array
Write a c program to delete an element in an array
C Program to Delete the Specified Integer from an Array without using function

Program #1: Write a c program to insert and delete an element in array

#include <stdio.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
int array[10];
int i, n, position, element, exist = 0;
printf("Enter number of elements \n");
scanf("%d", &n);
printf("Enter the elements\n");
for (i = 0; i < n; i++)
{
scanf("%d", &array[i]);
}
printf("Input array elements are\n");
for (i = 0; i < n; i++)
{
printf("%d\n", array[i]);
}
printf("Enter the element to be deleted from array\n");
scanf("%d", &element);
for (i = 0; i < n; i++)
{
if (array[i] == element)
{
exist = 1;
position = i;
break;
}
}
if (exist == 1)
{
for (i = position; i < n - 1; i++)
{
array[i] = array[i + 1];
}
printf("array after deletion \n");
for (i = 0; i < n - 1; i++)
{
printf("%d\n", array[i]);
}
}
else
printf("Given element %d is not exist in the array \n", element);
getch();
}

Output:

C programming power function example program

Posted by: Instanceofjava Posted date: May 20, 2017 / comment : 1 C language interview programs , c programming examples for beginners

C program to find power of a number using function.
Write a c program to find power of a number using function recursion

Program #1 : Write a c program to find power of a number without using function recursion

#include<stdio.h>
int main(){
int power,num,i=1;
long int sum=1;
printf("Enter a number:\n ");
scanf("%d",&num);
printf("\nEnter power:\n ");
scanf("%d",&power);
while(i<=power){
sum=sum*num;
i++;
}
printf("\n%d to the power %d is: %ld",num,power,sum);
getch();
}

Output:

Program #2 : Write a c program to find power of a number using function recursion

#include<stdio.h>
void powerofnumber(int power, int num);
int main(){
int power,num,i=1;
long int sum=1;
printf("Enter a number:\n ");
scanf("%d",&num);
printf("\nEnter power:\n ");
scanf("%d",&power);
powerofnumber(power,num);
return 0;
}
void powerofnumber(int power, int num){
int i=1,sum=1;
while(i<=power){
sum=sum*num;
i++;
}
printf("\n%d to the power %d is: %ld",num,power,sum);
}

Output:

Enter a number:
23
Enter power:
3
23 to the power 3 is: 12167

C program to display characters from a to z using loop

Posted by: Instanceofjava Posted date: May 20, 2017 / comment : 0 C language interview programs , c programming examples for beginners

C program to display characters from a to z using loop.
We can print all alphabets starting from A to Z using for loop.
Take a char variable and using for loop iterate it from A to Z.
Let us see an Example C program to print A to Z using for loop.

Program #1: Write a C program to print or display characters from A to Z using for loop.

#include <stdio.h>
int main()
{
char c;
for(c = 'A'; c <= 'Z'; ++c)
printf("%c ", c);
return 0;
}

Output:

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Program #2: Write a C Program to Display English Alphabets in Uppercase and Lowercase

#include <stdio.h>
int main()
{
char c;
printf("Enter u to display alphabets in uppercase. And enter l to display alphabets in
lowercase: ");
scanf("%c", &c);
if(c== 'U' || c== 'u')
{
for(c = 'A'; c <= 'Z'; ++c)
printf("%c ", c);
}
else if (c == 'L' || c == 'l')
{
for(c = 'a'; c <= 'z'; ++c)
printf("%c ", c);
}
else
printf("Error! You entered invalid character.");
getch();
}

Output:

Convert string to integer c programming

Posted by: Instanceofjava Posted date: May 20, 2017 / comment : 0 C language interview programs , c programming examples for beginners

We can convert string to integer in c Programming by using atoi() function.
atoi() is a library function from C.
int atoi(const char *str) ;
Now we will write a C program to convert String format number to integer.
Read input from user as string.
Convert string to integer using atoi() function.

Program #1: Write a C program to convert String to integer in c Programming.

#include<stdio.h>
#include<stdlib.h>
int main() {
int number;
char number_string[3];
printf("Please Enter a number : ");
scanf("%s", number_string);
number = atoi(number_string);
printf("\n number_string : %d", number);
getch();
}

Output:

Bubble sort algorithm in c with explanation

Posted by: Instanceofjava Posted date: May 20, 2017 / comment : 0 C language interview programs , c programming examples for beginners

Bubble sort is one of the example of sorting algorithm.
Bubble sort in data structure
Bubble sort is a procedure of sorting elements in ascending or descending order.
If we want to sort an array of numbers [4,2,3,1] using bubble sort it will return [1,2,3,4] after sorting in ascending order.

Bubble sort in c with explanation

Bubble sort algorithm of ascending order will move higher valued elements to right and lower value elements to left.
For this we need to compare each adjacent elements in an array and check they are in order or not if not swap those two elements.
After completion of first iteration highest value in the array will be moved to last or final position.
In the worst case all the highest elements in array like [9 8 7 5 4] completely in reverse order so we need to iterate all of the elements in N times.
Repeat this process N- 1 time in worst case to sort set of elements.
Worse case complexity : O(n²)
In the best case scenario all the elements are already in sorted order so one iteration with no swaps required.
Best case complexity: O(n)
Let us see the graphical representation of explanation of bubble sort algorithm in c programming language.

Bubble sort algorithm with example diagram

Bubble sort algorithm pseudocode:

Program #1 : Write a C program to sort list of elements using bubble sort algorithm.

#include <stdio.h>
#include <stdlib.h>
//Bubble sort algorithm in c
//www.instanceofjava.com
int main(int argc, char *argv[])
{
int array[100], n,i,j,k, swap;
printf("Enter number of elements to sort\n");
scanf("%d", &n);
printf("Enter %d elements \n", n);
for (i = 0; i< n; i++)
scanf("%d", &array[i]);
printf("\nBefore sorting \n ");
for (k = 0; k < n; k++) {
printf("%5d", array[k]);
}
for (i = 1; i < n; i++) {
for (j = 0; j < n - 1; j++) {
if (array[j] > array[j + 1]) {
swap = array[j];
array[j] = array[j + 1];
array[j + 1] = swap;
}
}
}
printf("\nAfter Bubble sort elements are:\n");
for (k = 0; k < n; k++) {
printf("%5d", array[k]);
}
return 0;
}

Output:

bubble sort algorithm in c program recursive

Now we will see program on recursive bubble sort algorithm in c
Bubble sort using recursive function in c

Program #2: Write a c program for bubble sort using recursion

#include <stdio.h>
#include <stdlib.h>
//Bubble sort algorithm in c
//www.instanceofjava.com
void bubblesort(int array[], int n);
int main(int argc, char *argv[])
{
int array[10], n,i,k;
printf("Enter number of elements to sort\n");
scanf("%d", &n);
printf("Enter %d elements \n", n);
for (i = 0; i< n; i++)
scanf("%d", &array[i]);
printf("\nBefore sorting \n ");
for (k = 0; k < n; k++) {
printf("%5d", array[k]);
}
bubblesort(array,n);
getch();
}
void bubblesort(int array[], int n){
int i,j,k, swap;
for (i = 1; i < n; i++) {
for (j = 0; j < n - 1; j++) {
if (array[j] > array[j + 1]) {
swap = array[j];
array[j] = array[j + 1];
array[j + 1] = swap;
}
}
}
printf("\nAfter Bubble sort elements are:\n");
for (k = 0; k < n; k++) {
printf("%5d", array[k]);
}
}

Output:

Enter number of elements to sort
6
Enter 6 elements
9 8 2 3 5 1
Before sorting
9 8 2 3 5 1
After Bubble sort elements are:
1 2 3 5 8 9

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