typedef struct {
    char *string;
} prod_t;

int
main(int agrc, char **argv){
    int i = 0;
    prod_t *c = NULL;

    char str2[100] = "abcd";
    c->string = (char *) malloc( 5 * sizeof(char));
    strcpy(c->string,str2);

    compares(c->stock,str2,i);

    return 0;
}

prod_t *c = malloc(sizeof(prod_t));

prod_t *c = malloc(sizeof(prod_t));

c->stock

typedef struct {
    char *string;
} prod_t;

int
main(int agrc, char **argv) {
    int i = 0;
    prod_t *c = malloc( sizeof( prod_t ));


    char str2[100] = "abcd";
    c->string = malloc( 5 * sizeof(char));
    strcpy(c->string,str2);

    compares(c->string,str2,i);

    return 0;
}