Using an infinite loop and the switch statement to implement a menu system. - C Statement

C examples for Statement:for

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Description

Using an infinite loop and the switch statement to implement a menu system.

Demo Code

#include <stdio.h>
#include <stdlib.h>

int menu(void);

int main( void )
{
   int command = 0;
   command = menu();/*  w w w. ja v  a 2 s  .c  o m*/

   while (command != 5 )
   {
         /* Get user's selection and branch based on the input. */

         switch(command)
         {
            case 1:
                {
                  puts("\nExecuting task A.");
                  break;
                }
            case 2:
                {
                  puts("\nExecuting task B.");
                  break;
                }
            case 3:
                {
                  puts("\nExecuting task C.");
                  break;
                }
            case 4:
                {
                  puts("\nExecuting task D.");
                  break;
                }
            case 5:     /* Exit program. */
                {
                  puts("\nExiting program now...\n");
                }
            default:
                {
                  puts("\nInvalid choice, try again.");
                }
         }  
         command = menu();
    }
    return 0;
}

int menu(void){
    int reply;

    puts("\nEnter 1 for task A.");
    puts("Enter 2 for task B.");
    puts("Enter 3 for task C.");
    puts("Enter 4 for task D.");
    puts("Enter 5 to exit program.");

    scanf("%d", &reply);

    return reply;
}

Result


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