array diff types

diff types

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define  int(x) *((int *) x)

int main() {
        void *a[2];

        char *b = "hello";

        a[1] = calloc(strlen(b), sizeof(char));
        a[1] = strncpy(a[1], b, strlen(b));

        a[0] = calloc(1, sizeof(int));
        int(a[0]) = strlen(a[1]);

        printf("%d\n", int(a[0]));
        printf("%s\n", a[1]);
        free(a[1]);
}