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

// MALLOC PITFALLS AND THINGS TO BE AWARE OF

int main(int argc, char* argv[]) {

    int* array = malloc(3 * sizeof(*array));

    // array might be NULL.  Most instructors will tell you to check the
    // return value of NULL.  It will be NULL if the system doesn't have
    // enough memory or something else is very, very wrong.
    
    // This is what most instructors will tell you to do.
    
    if(array == NULL) {
        fprintf(stderr, "malloc(…) failed.\n");
        return EXIT_FAILURE;
    }

    // How can you get 100% test coverage if you don't know how to force
    // malloc(…) to be NULL?

    int return_code = EXIT_FAILURE;
    int* array_2 = malloc(3 * sizeof(*array));
    if(array_2 != NULL) {
        // Do some stuff
        return_code = EXIT_SUCCESS;
    }

    //return EXIT_SUCCESS;
    return return_code;
}
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