Compilare: main.cpp: In function 'int main()': main.cpp:158:27: warning: narrowing conversion of 'b' from 'int' to 'short int' inside { } [-Wnarrowing] g[a].push_back({b, l, c}); ^ main.cpp:158:27: warning: narrowing conversion of 'l' from 'int' to 'short int' inside { } [-Wnarrowing] main.cpp:158:27: warning: narrowing conversion of 'c' from 'int' to 'short int' inside { } [-Wnarrowing] main.cpp: In member function 'char InParser::read_ch()': main.cpp:20:29: 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, fin); ^