Compilare: user.c: In function ‘main’: user.c:8:8: warning: unused variable ‘g’ [-Wunused-variable] FILE *g = freopen("royfloyd.out", "w", stdout); ^ user.c:7:8: warning: unused variable ‘f’ [-Wunused-variable] FILE *f = freopen("royfloyd.in", "r", stdin); ^ user.c:11:7: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.c:14:9: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a[i][j]); ^