Compilare: main.cpp: In function 'int main()': main.cpp:65:11: warning: unused variable 's1' [-Wunused-variable] int m,s1,d1; ^~ main.cpp:65:14: warning: unused variable 'd1' [-Wunused-variable] int m,s1,d1; ^~ main.cpp:63:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("fmcm.in","r",stdin); ^ main.cpp:64:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("fmcm.out","w",stdout); ^