Réponse acceptée !
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

void GetFileName(char *szPath, char *Buff)
{
    int iCount = 0;
    int iSize = strlen(szPath);
    char *c = szPath + iSize;

    while(*c != '\\')
    {
          c--;
          iCount++;
     }

     strncpy(Buff, szPath + iSize - iCount + 1, iCount);
}

int main(int argc, char *argv[])
{
  char Buff[256];
  GetFileName("C:\\Documents and Settings\\David\\Essai.exe", Buff);
  printf("%s\n", Buff);
  system("PAUSE");   
  return 0;
}

if(!Meilleur("Joky")) return ERREUR;<

Réponse acceptée !
PathStripPath