strcpy函数

#include<iostream>#include <assert.h>using namespace std;char* strcopy(char *dest,const char* source){assert(source!=NULL);char* re=dest;while(*dest++=*source++){//dest++;//source++;}return re;}int main(){char a[90];char b[]="abcsd";char*c=strcopy(a,b);cout<<c<<endl;cout<<a<<endl;return 0;}