SWITCH PROGRAMME

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   ☆SWITCH PROGRAMME LIST☆


What is a switch Statement in C?

The switch case statement is used when we have multiple options and we need to perform a different task for each option.when the variable being switched on is equal to a case,the statements following that case will execute until a break statement is reached. When a break statement is reached the switch terminates,and the flow of control jumps to the next line after the switch statement.Not every case needs to contain a break .if no break appears , the flow of control will fall through to subsequent cases until a break is reached.
 The if..else..if ladder allows you to execute a block code among many alternatives. If you are checking on the value of a single variable in if...else Ladder , it is better to use switch statement.

    The switch statement is often faster than nested if...else (not always). Also, the syntax of switch statement is cleaner and easy to understand.
    The syntax of switch...case:
    When a case constant is found that matches the switch expression, control of the program passes to the block of code associated with that case.

    Suppose, the value of n is equal to constant2. The compiler executes the statements after case constant2: until break is encountered. When break statement is encountered, switch statement terminates. 

    #include <stdio.h>
void main()
{
    int x ;

    printf("Enter Value of x");
    scanf("%d", &x);

    switch (x)
    {
        case 1: printf("Choice is 1");
        break;
        case 2: printf("Choice is 2");
        break;
        case 3: printf("Choice is 3");
        break;
        default: printf("Choice other than 1, 2 and 3");
        break;
    }
}

      •OUTPUT 

    First run:
    Enter Value of x : 2
    Choice is 2

    Second run:
    Enter Value of x : 1
    Choice is 1

    Third run:
    Enter Value of x : 50
    Choice other than 1, 2 and 3
Here are some switch programmes:

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