当从C程序中调用GCC错误输出时，它会被抑制。

I'm trying to compile certain files from my C program in Linux and give them grades. I'd like to give zero grade if the file did not compile. I already managed to do so, but I have a problem in this case, because gcc is printing a message to the screen (what is called the compilation error).I'm trying to compile certain files from my C p