is it possible in C or C++ to create a function inside another?

Question

Could someone please tell me if this is possible in C or C++?

void fun_a();
//int fun_b();
...
main(){
   ...
   fun_a();
   ...
   int fun_b(){
     ...
            


        

Answer 1

Though C and C++ both prohibit nested functions, a few compilers support them anyway (e.g., if memory serves, gcc can, at least with the right flags). A nested functor is a lot more portable though.