Compilare: user.cpp: In function ‘int main()’: user.cpp:24:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&t); ^ user.cpp:27:79: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%lld %lld %lld %lld %lld %lld %lld",&t1,&t2,&t3,&A,&B,&C,&n); ^