Compilare: user.cpp: In function ‘int main()’: user.cpp:121:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,who,lg,T; ^ user.cpp:121:17: warning: unused variable ‘lg’ [-Wunused-variable] int i,j,who,lg,T; ^ user.cpp:123:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d %s\n",&N,&T,S); ^ user.cpp:128:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%s",S); ^