Compiling program within another program using gcc

Question

From command line I am getting file name which I have to compile using gcc. lets say its like this.

./a.out fileToBeCompiled.c

Then how I can compile this file using gcc within my program? lets say main.c for which a.out is being made.

Answer 1

Just exec gcc from within you program.

int main(int argc, char** argv)
{
   execv("/usr/bin/gcc", argv);
}

Answer 2

You can always call gcc to compile from an shell execution command within your program.

Reference to the system function.