C++ program to concatenate two Strings using Pointer

In this post we will write a simple C++ program to concatenate two strings using Pointer, the code is self explanatory with comments for better understanding.

Write a C++ program to concatenate two Strings using Pointer:

You can also execute this code on our online compiler.

#include <iostream>
using namespace std;
 
int main() {
 
    char str1[100], str2[100];
    char * s1 = str1;
    char * s2 = str2;
 
    // Inputting 2 strings from user
    cout<<"Enter 1st string: ";
    cin>>str1;
    cout<<"Enter 2nd string: ";
    cin>>str2;
 
    // Moving till the end of str1
    while(*(++s1));
 
    // Coping str2 to str1
    while(*(s1++) = *(s2++));
 
    cout<<"Concatenated string:"<<str1;
 
    return 0;
 
}

Output:

Enter 1st string: Hello
Enter 2nd string: Proprogramming
Concatenated string: HelloProprogramming