Compilare: user.c: In function ‘main’: user.c:12:4: warning: implicit declaration of function ‘rand’ [-Wimplicit-function-declaration] gigel[j] = nr[rand() % n]; ^ user.c:4:27: warning: unused variable ‘r’ [-Wunused-variable] int n, s, nr[100], i, j, r, cs, gigel[6]; ^ user.c:5:7: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &s); ^ user.c:7:8: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", nr + i); ^