Conflicting types with function definitions C

Question

I am having trouble in understanding why gcc cannot differentiate between the following functions:

void a(int* p);
void a(void);
int* a(int p); 

void a(int* p){}
void a(void){}
int* a(int p) {return (void*)0;}

During compilation "error: conflicting types for ‘a’" and "note: previous declaration was here" errors are being returned.

Because C doesn't have function overloads. – Oliver Charlesworth Dec 03 '13 at 09:22 — Oliver Charlesworth, Dec 03 '13 at 09:22

score 1 · Answer 1 · answered Dec 03 '13 at 09:23

1

You're trying to overload a function in C. This is a C++ feature. In C a function can have a single prototype.

answered Dec 03 '13 at 09:23

egur

I wonder if *any* programming question can be answered without making reference to C++... – Kerrek SB Dec 03 '13 at 09:34

1 Answers1