有趣的字符串copy函数

#include <iostream>
#include <iomanip>
#include <string>
using namespace std;
double power(double x,int n);
char * mycopy(char *dest, const char * src)
{
    if(src == NULL || dest ==NULL)
        return NULL;
    if(src == dest)
        return NULL;
    char *temp = dest;
    cout << "src = " << src << endl;
    while((*dest++ = *src++)!= '\0'){}
    
    cout <<"temp = "<<temp<<endl;
    
    return temp;
}

int main()
{
    cout <<"hello"<<endl;
    
    char src[10] = "wfg";
    char dest[10];
    mycopy(dest,src);
    cout << "dest = "<< dest <<endl;
    return 0;
    
}