#include <stdio.h>
#include <string.h>

int f(char **array)
{
        if (strcmp (array [0], "ABC"))
                return 1;
        if (strcmp (array [1], "DEF"))
                return 2;

        strcpy (array [0], "DEF");
        strcpy (array [1], "ABC");

        return 0;
}

int main()
{
        int i;
        char **val;

        val = calloc(4, sizeof(char *));
        val[0]="ABC";
        val[1]="DEF";

        i = f(val);

        printf("%d\n",i);

        return 0;
}