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

int main() {

    char *s[4] = {"voyage", "fetes", "les amis", "vacances"};
    char t[10];
    strcpy(t, *(s + 2));
    *(t + strlen(s[1])) = '\0';
    strcat(t, *(s + 3) + 5);
    printf("%s",t);

    return 0;
}

/** Output:
 * les aces
 **/