Compilare: user.cpp: In function ‘complex Rotate(complex, complex, long double)’: user.cpp:47:22: warning: narrowing conversion of ‘std::cos(angle)’ from ‘long double’ to ‘double’ inside { } [-Wnarrowing] complex R={cos(angle),sin(angle)}; ^ user.cpp:47:33: warning: narrowing conversion of ‘std::sin(angle)’ from ‘long double’ to ‘double’ inside { } [-Wnarrowing] complex R={cos(angle),sin(angle)}; ^ user.cpp: In function ‘int main()’: user.cpp:77:20: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d",&N); ^ user.cpp:80:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%lf%lf",&v[i].r,&v[i].i); ^