How to have a function default argument/parameter to be another previous argument value ?
let's make the below illustration only really work
How to solve it? thanks much.Code:char* function(char* a, int b, char** c = &a){ // if invoked only with two arg, c is assigned automatically with reference of a //... }
Instead of a default argument, add a two-parameter overload that forwards to the three-parameter version:
Code:char* function(char* a, int b, char** c) { // ... } char* function(char* a, int b) { return function(a, b, &a); }
Look up a C++ Reference and learn How To Ask Questions The Smart WayOriginally Posted by Bjarne Stroustrup (2000-10-14)
