Why is the F8 gray? No one-step debugging? The build options in code blocks are grey all the time. There are compilers////That may encounter this problem when using Codeblocks to decompile.

Why the F8 is grey. You can't debug one step.
The build options in code blocks are grey all the time. There are compilers///
You may encounter this problem when you use Codeblocks to decompile. This is because you have not set up the project.

First build a project project in file and then debugger,
Just a. C or. cpp file cannot be done directly, only run or build
Because it's not a project, you can't build project,
So just follow what I say, and build a project file. Then paste in the code of the individual C file, and your problem will be solved.
Why the 2013 discount is not a direct answer. It's a little bit of merit. C Community and code is everyone's community ' code.
So find the answer and try to get everyone to see it, okay? After all, not all the big guy, rookie also a lot.
You don't have to look for a running function of a software for a long time, everyone to solve the line No.
The next Codeblocks disassembly
In the Codeblocks
First step: Break point
Step two: Debug->start/continue, or press "F8"//debug
Step three: Debug->debug windows->disassembly//Create Code display window
Fourth step, assembly code display