Compilare: user.cpp: In function ‘void insertpula(int, int)’: user.cpp:56:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(val[i] == -1 && col.size() > mofturi[i]) { ^ user.cpp: In function ‘void erasepula(int, int)’: user.cpp:70:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(val[i] != -1 && col.size() - 1 == mofturi[i]) ^ user.cpp: In function ‘char getch(FILE*)’: user.cpp:23:30: 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, BUFF, fin); ^