Compilare: user.cpp: In function ‘int main()’: user.cpp:36:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,vecin,tatanod,tatavec; ^ user.cpp:36:19: warning: unused variable ‘tatanod’ [-Wunused-variable] int i,j,vecin,tatanod,tatavec; ^ user.cpp:36:27: warning: unused variable ‘tatavec’ [-Wunused-variable] int i,j,vecin,tatanod,tatavec; ^ user.cpp:39:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&nr,&k); ^ user.cpp:42:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&xi,&yi); ^