Compilare: user.cpp: In function ‘bool Verifica(long int)’: user.cpp:21:16: warning: unused variable ‘gr’ [-Wunused-variable] long int i, j, gr; ^ user.cpp: In function ‘void Citire()’: user.cpp:13:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%ld\n",&N); ^ user.cpp:15:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s",s); l = strlen(s); if( s[l-1] == '\n' ){ s[l-1]='\0'; l--; } ^