Compilare: user.cpp: In function ‘int main()’: user.cpp:9:22: warning: variable ‘ok’ set but not used [-Wunused-but-set-variable] int r,d,sol,i,nr,ok,doi,trei; ^ user.cpp:9:25: warning: unused variable ‘doi’ [-Wunused-variable] int r,d,sol,i,nr,ok,doi,trei; ^ user.cpp:9:29: warning: unused variable ‘trei’ [-Wunused-variable] int r,d,sol,i,nr,ok,doi,trei; ^ user.cpp:10:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&r,&d); ^