Compilare: main.cpp:3:0: warning: ignoring #pragma warning [-Wunknown-pragmas] #pragma warning(disable : 4996) main.cpp: In function 'char my_getch()': main.cpp:41:30: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, stdin); ^ main.cpp: In function 'int main()': main.cpp:113:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ssm.in", "r", stdin); ^ main.cpp: In member function 'void Solution::print()': main.cpp:104:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ssm.out", "w", stdout); ^