Error C2371: redefinition; different basic types - why?

Question

I have the following code:

#include 
#include 

// helping
void sortint(int numbers[], int array_size)
{
  int i, j, temp;

           


        

Answer 1

If you are going to place the function eb after the point at which it is called, then you need to place a prototype for it before it is called... otherwise, C will use the default prototype and then your function ends up redefining it, thus the error you received.

Alternatively, you can move the functions themselves before they are used in the source file, but that's not always possible. Placing prototypes at the top of the file or, better still, in a header file you can include anywhere you will use the functions is the best alternative.