mem_segments.c

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

char globeBuf[65536];       // Unitialized data segment
int primes[] = {2, 3, 5, 7};// Initialized data segment

static int
square(int x)               // Allocated in frame for square()
{
    int result;             // Allocated in frame for square()

    result = x * x;
    return result;          // Return value passed via register

}

static void
doCalc(int val)             // Allocated in frame for doCalc()
{
    printf("The square of %d is %d\n", val, square(val));

    if (val < 1000) {
        int t;              // Allocated in frame for doCalc()

        t = val * val * val;
        printf("The cube of %d is %d\n", val, t);
    }
}

int
main(int argc, char *argv[])// Allocated in frame for main()
{
    static int key = 9973;  // Initialized data segment
    static char mbuf[10240000]; // Uninitialized data segment
    char *p;

    p = malloc(1024);       // Points to memory in heap segment

    doCalc(key);

    exit(EXIT_SUCCESS);
}