C++ 中，实现strcpy的

#i

#include <iostream>#include <string>using namespace std;char* str_copy(char* dest,const char* src);int main(){    char* src="this is a test";    cout<<strlen(src)<<endl;    //申请内存大小时，需要在源串的长度上加1,以存放\0    char* test=(char*)(malloc(strlen(src)+1));    cout<<sizeof(test)<<endl;    str_copy(test,src);    if(test!=NULL)    {        cout<<test<<endl;    }    else    {        cout<<"No Enters"<<endl;    }    free(test);      //for console test    char c;    cin>>c;    //end test    return 0;};char* str_copy(char* dest,const char* src){    if(dest==NULL)    {return NULL;}    if(src==NULL || *src=='\0')    {return NULL;}    char* testTemp=dest;    while((*testTemp++=*src++)!='\0');    return testTemp;}