Compilare: user.cpp: In function ‘int main()’: user.cpp:22:20: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘char*’ [-Wformat=] scanf ("%d", &r); ^ user.cpp:27:28: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘char*’ [-Wformat=] {scanf("%d", &r); ^ user.cpp:8:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] {freopen ("joc8.in", "r", stdin); ^ user.cpp:9:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d", &x, &y); ^ user.cpp:22:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &r); ^ user.cpp:27:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] {scanf("%d", &r); ^