Hi everyone.

I hope you're having a good day.

As you see in the picture when I read double using scanf "%lf" specifier it's ok, but when I'm trying to print double using printf "%lf" specifier, I got zero as result, but when I use "%f" floating-point specifier give me the right result, can any one help me with this problem and tell me why?

My IDE: Code::Blocks 13.12

My compiler: GNU GCC Compiler.

Thanks in advance :D