C initialize an array

• 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

1. #include <stdio.h>
2. // write a c program to explain how to initialize an array
3. int main () {
4. 
   
5.    int number[ 15 ]; 
6.    int i,k;
7.    
8.    
9.    for (k = 0; k < 15; k++ ) {
10.       printf("Array[%d] = %d\n", k, number[k] );
11.    }
12.  
13.   getch();
14. }

Output:

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

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

Output:

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