a.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
 
int main(void) {
	int wins = 2;
	char *s = "good ";
	char *p = malloc(wins * strlen(s) + 1);
	for (int i = 0; i < wins; i++) p = strcat(p, s);
	printf("%s\n", p);
	free(p);
}