Compilare: user.cpp: In function ‘int main()’: user.cpp:40:43: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long int’ [-Wformat=] fprintf( output_file, "%d ", W[i] ); ^ user.cpp:18:51: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( input_file, "%d %d %lld", &N, &C, &S ); ^ user.cpp:21:56: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( input_file, "%d %d", &V[i].x, &V[i].y ); ^