C/C++

Forward declaration

What does a working version of this code look like? This is just a diagram.

void bar(float, char); // forward declaration to satisfy

int foo (void); // forward declare all functions

int foo (void) { // genuine declaration

bar(2.5, I+ I) ; // call function bar()

void bar(float f, char c) { // genuine declaration

k foo (); //call function foo()

}