Switch case in c example program

• 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

1. # include <stdio.h>
2. void main() {
3.     char operator;
4.     double a,b;
5.     printf("Enter an operator (+, -, *,): ");
6.     scanf("%c", &operator);
7.     printf("Enter two numbers ");
8.     scanf("%lf %lf",&a, &b);
9.     switch(operator)
10.     {
11.         case '+':
12.             printf("%.1lf + %.1lf = %.1lf",a, b, a + b);
13.             break;
14.         case '-':
15.             printf("%.1lf - %.1lf = %.1lf",a, b, a - b);
16.             break;
17.         case '*':
18.             printf("%.1lf * %.1lf = %.1lf",a, b, a * b);
19.             break;
20.         case '/':
21.             printf("%.1lf / %.1lf = %.1lf",a, b, a / b);
22.             break;
23.         default:
24.             printf("Error! operator is not correct");
25.     }
26. }

Output:

1. Enter an operator (+, -, *,): +
2. Enter two numbers 12
3. 12
4. 12.0 + 12.0 = 24.0
5. Process returned 18 (0x12)   execution time : 7.392 s
6. 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.