Can't find file executable in your configured search path for gnc gcc compiler

My problem is that code::blocks error message tells me that it can't find file executable in the search path for gnc gcc compiler. Although, I don't know what that means. Also I typed out some code:

#include <iostream>
 using namespace std;

 int main(void) {
    cout <<"Hello World"<<endl;

    return 0;
 }

I can't build it or run in code::blocks. What do I need to do?

I went on line but I got some answers that are way over my head. I was able to use code::blocks once before I installed Visual studios express 2013. Visual studios didn't work right either. It kept asking me to repair or uninstall every time I tried to open it. So I deleted it along with code::blocks. Now that I re-installed code::blocks I still can't get to work right.

This problem with compilers is taking up all my time and I can't practice learning programming because I can't get any compiler to work right. I need some help, please.