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C Programming Starter Kit 2.0
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SamsPublishing-CProgrammingStarterKit-v2.0-Win31.iso
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tyc
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list13_4.c
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C/C++ Source or Header
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1993-10-16
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2KB
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77 lines
/* Demonstrates using an infinite loop to implement */
/* a menu system. */
#include <stdio.h>
#define DELAY 150000 /* Used in delay loop. */
int menu(void);
void delay(void);
main()
{
int choice;
while (1)
{
/* Get the user's selection. */
choice = menu();
/* Branch based on the input. */
if (choice == 1)
{
puts("\nExecuting choice 1.");
delay();
}
else if (choice == 2)
{
puts("\nExecuting choice 2.");
delay();
}
else if (choice == 3)
{
puts("\nExecuting choice 3.");
delay();
}
else if (choice == 4)
{
puts("\nExecuting choice 4.");
delay();
}
else if (choice == 5) /* Exit program. */
{
puts("Exiting program now...");
delay();
break;
}
else
{
puts("Invalid choice, try again.");
delay();
}
}
}
int menu(void)
/* Displays a menu and inputs user's selection. */
{
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;
}
void delay( void )
{
long x;
for ( x = 0; x < DELAY; x++ )
;
}