#include <stdio.h>

struct somestruct {
    int apples;
    int mangoes;
};

void func(struct somestruct s)
{
    s.apples = 10;
    s.mangoes = 1;
}

int main(void)
{
    struct somestruct john;

    func(john);  /* passing a pointer to the struct */

    printf("apple: %d\n", john.apples); /* prints "10" */
    printf("mangoes: %d\n", john.mangoes); /* prints "1" */

    return 0;
}