How do you call a program from a menu?

I have searched this board without any luch and unfortunatly my C book does not give an example of calling another program from a menu.

Can someone steer me in the right direction?
I'm in the dark on this this one. I would like to gain the knowledge on this one.

Thanks for any help you can provide.

Code:

/*
                          Menu
*/

#include <stdio.h>
#include <string.h>
#include <stdlib.h> 
#include "carpet.h"
#include "c:\mydocu~1\pa17.rpt" <---The compiler screams at this
void function1( int);
void function2( int);
void function3( int);
main()
{
	void (*f[3]) ( int) = {function1, function2, function3};
	int choice;
    printf("0 = Carpet Information Data Entry\n");
	printf("1 = Generate Reports\n");
	printf("2 = Utilities\n");
	printf("3 = End Program\n");
	scanf("%d", &choice);

	while (choice >= 0 && choice < 3)
	{
		(*f[choice]) (choice);
		
	    printf("0 = Carpet Information Data Entry\n");
	    printf("1 = Generate Reports\n");
	    printf("2 = Utilities\n");
		printf("3 = End Program\n");
	    scanf("%d", &choice);
	}//end while loop
	printf("Program has terminated\n");
	return 0;
}
void function1(int a)
{
	system("cls");
	printf("%d\n", a);
	printf("%d\n", carpetCharge1);

}//end function1
void function2(int b)
{
	
	system("cls");
                fopenf(c:\mydocu~1\pa17.rpt", "rb"); <--                                                                This doesn't work either
	printf("%d\n", b);
	
}//end function2
void function3(int c)
{
	system("cls");
	printf("%d\n", c);
}//end function3

> #include "c:\mydocu~1\pa17.rpt" <---The compiler screams at this
Probably because it doesn't contain any C code.

Can't imagine why you would want to include it, since you read it later

Perhaps you were trying
#define FILENAME "c:\\mydocu~1\\pa17.rpt"
Note the use of \\

> fopenf(c:\mydocu~1\pa17.rpt", "rb");
fopen("c:\\mydocu~1\\pa17.rpt", "rb");
or
fopen(FILENAME, "rb");