Question

Implement the Cstring function strcpy(dest, source) in c++. Do not use the library. The copy process will only stop at the last "\0". Make sure dest is large enough

Answer 1

Please find the answer below.
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code.cpp

#include <iostream>
using namespace std;

void strcpy(char **dest,char * source){
   int length=0;
   while(source[length]!='\0'){
       length++;
   }
   *dest = new char[length+1];
   length=0;
   while(source[length]!='\0'){
       (*dest)[length] = source[length];
       length++;
   }
   dest[length] = '\0';
}

int main( ){
   char *dest=0;
   char source[10]="hello";
   strcpy(&dest,source);
   cout<<"Destination now : "<<dest;
   return 0;
}