C++ Program to Concatenate Two Strings

  • How to concatenate two strings without using strcat function.
  • C++ program to concatenate two input strings using while loop.

C++ program to concatenate two strings

#include <iostream>
#include <cstring>
using namespace std;
 
int main(){
    char first[1000], second[1000];
    int i = 0, len;
    cout << "Enter first string"<< endl;
    cin.getline(first, 1000);
    cout << "Enter second string"<< endl;
    cin.getline(second, 1000);
    
    len = strlen(first);
    while(second[i] != '\0'){
     first[len] = second[i];
     len++;
     i++;
    }
    first[len] = '\0';
     
    cout << "Concatenated String"<< endl<< first;

    return 0;
}
Output
Enter first string
Tech
Enter second string
CrashCourse
Concatenated String
TechCrashCourse