mahjong.cpp: In function 'void citeste(int&)': mahjong.cpp:47: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result mahjong.cpp:55: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result mahjong.cpp: In function 'int main()': mahjong.cpp:83: warning: suggest explicit braces to avoid ambiguous 'else' mahjong.cpp:97: warning: suggest explicit braces to avoid ambiguous 'else' mahjong.cpp:111: warning: suggest explicit braces to avoid ambiguous 'else' mahjong.cpp:125: warning: suggest explicit braces to avoid ambiguous 'else' mahjong.cpp:61: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result mahjong.cpp:62: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result mahjong.cpp:64: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result