Compilare: user.cpp: In function ‘int main()’: user.cpp:21:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(cin,"%d",&t); ^ user.cpp: In function ‘void read()’: user.cpp:38:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(cin,"%d",&n); ^ user.cpp:41:48: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(cin,"%lld %lld",&v[i].x,&v[i].y); ^