Write a program to read 2 strings and first string appends on the 2nd string

Question

for eg.if str1 is GOOD and str2 is MORNING the result should be MORNINGGOOD

Answer 1

#include<cstring>
#include<iostream>
int main()
{
char a[10]="hi" , b[10]="there!!";
cout<<strcat(b,a);
}

//output there!!hi

Answer 2

string a="hi", b="there!";
cout<<b+a;

//output there!hi

Answer 3

no using strcat (appends!)