home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Sams Teach Yourself C in 21 Days (6th Edition)
/
STYC216E.ISO
/
mac
/
Examples
/
Day13
/
menu2c.c
< prev
next >
Wrap
C/C++ Source or Header
|
2002-05-04
|
2KB
|
83 lines
/* Demonstrates using an infinite loop and the switch */
/* statement to implement a menu system. */
#include <stdio.h>
#include <stdlib.h>
#define DELAY 150000
int menu(void);
void delay(void);
int main( void )
{
while (1)
{
/* Get user's selection and branch based on the input. */
switch(menu())
{
case 1:
{
puts("\nExecuting task A.");
delay();
break;
}
case 2:
{
puts("\nExecuting task B.");
delay();
break;
}
case 3:
{
puts("\nExecuting task C.");
delay();
break;
}
case 4:
{
puts("\nExecuting task D.");
delay();
break;
}
case 5: /* Exit program. */
{
puts("\nExiting program now...\n");
delay();
exit(0);
}
default:
{
puts("\nInvalid choice, try again.");
delay();
}
} /* End of switch */
} /* End of while */
return 0;
}
/* Displays a menu and inputs user's selection. */
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;
}
void delay( void )
{
long x;
for( x = 0; x < DELAY; x++ )
;
}