C++ Program to Concatenate Two Strings

In C++, we can manipulate two types of strings C-style string and string object of string class.

TOPICS:

(1) Concatenate C-Style Strings

(2) Concatenate String Objects of String Class

C++ Program to Concatenate C-Style Strings

Example 1:

#include<iostream>

using namespace std;

int main()

{

    char str1[50], str2[50], str3[100];

    int i,j;

    cout<<"Enter first string: ";

    cin.getline(str1,50);

    cout<<"\nEnter second string: ";

    cin.getline(str2,50);

    for(i=0;str1[i]!='\0';++i)

        str3[i]=str1[i];

    for(j=0;str2[j]!='\0';++j)

        str3[i+j]=str2[j];

    str3[i+j]='\0';

    cout<<"\nConcatenated string is "<<str3;

    return 0;

}

OUTPUT:

Enter first string: C++

Enter second string: Programming

Concatenated string is C++Programming

Example 2:

#include<iostream>

#include<string.h>

using namespace std;

int main()

{

    char str1[50], str2[50];

    cout<<"Enter First String: ";

    cin.getline(str1, 50);

    cout<<"\nEnter Second String: ";

    cin.getline(str2, 50);

    strcat(str1, str2);

    cout<<"\nConcatenated String is "<<str1;

    return 0;

}

OUTPUT:

Enter First String: C++

Enter Second String: Programming

Concatenated String is C++Programming

C++ Program to Concatenate String Objects of String Class

#include<iostream>

#include<string.h>

using namespace std;

int main()

{

    string str1, str2;

    cout<<"Enter First String: ";

    getline(cin, str1);

    cout<<"\nEnter Second String: ";

    getline(cin, str2);

    cout<<"\nConcatenated String is "<<str1+str2;

    return 0;

}

OUTPUT:

Enter First String: C++

Enter Second String: Programming

Concatenated String is C++Programming