自己实现strcpy

#include <iostream>

using namespace std;

char* mystrcpy(char* dest,const char* src)
{
    if(src==nullptr || dest==nullptr)
    {
        return nullptr;
    }
    char* addr=dest;
    while((*dest++=*src++)!='\0');
    return dest;
}
int main(int argc, char *argv[])
{
    //char p[10];
    //char *pp;
    //mystrcpy(p,"asd");
    char a[]="qwe";
    char b[]="asd";
    mystrcpy(a,b);
    cout<<a<<endl;
    return 0;
}