Solution for Exercise 15-5

ex1505

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

void sub(void);

int main()
{
    puts("This program quits before it's done.");
    sub();
    puts("Or was that on purpose?");
    return(0);
}

void sub(void)
{
    puts("Which is the plan.");
    exit(0);
}

Notes

* The exit() function is more of a termination command than the return keyword. exit() bails out of the code, halting the program wherever it's encountered.

* Even if your code uses exit() to terminate the program, I strongly recommend that you specify a return statement in the main() function. If anything, having return there, even if it's never reached, avoids a "control reaches end of non-void function" warning error.

Exercise ex1506 →