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C++ "Hello, World!" ProgramPrint Number Entered by UserAdd Two NumbersFind Quotient and RemainderFind Size of int, float, double and char in Your SystemSwap Two NumbersFind ASCII Value of a CharacterMultiply two Numbers
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Check Whether Number is Even or OddCheck Whether a character is Vowel or ConsonantFind Largest Number Among Three NumbersFind All Roots of a Quadratic EquationCalculate Sum of Natural NumbersCheck Leap YearFind FactorialGenerate Multiplication TableDisplay Fibonacci SeriesFind GCDFind LCMReverse a NumberCalculate Power of a NumberCheck Whether a Number is Palindrome or NotCheck Whether a Number is Prime or NotDisplay Prime Numbers Between Two IntervalsCheck Armstrong NumberDisplay Armstrong Number Between Two IntervalsDisplay Factors of a NumberCreate Pyramid and PatternMake a Simple Calculator to Add, Subtract, Multiply or Divide Using switch...case
Functions
Display Prime Numbers Between Two Intervals Using FunctionsCheck Prime Number By Creating a FunctionCheck Whether a Number can be Express as Sum of Two Prime NumbersFind Sum of Natural Numbers using RecursionCalculate Factorial of a Number Using RecursionFind G.C.D Using RecursionConvert Binary Number to Decimal and vice-versaConvert Octal Number to Decimal and vice-versaConvert Binary Number to Octal and vice-versaReverse a Sentence Using RecursionCalculate Power Using Recursion
Arrays and Strings
Calculate Average of Numbers Using ArraysFind Largest Element of an ArrayCalculate Standard DeviationAdd Two Matrix Using Multi-dimensional ArraysMultiply Two Matrix Using Multi-dimensional ArraysFind Transpose of a MatrixMultiply two Matrices by Passing Matrix to FunctionAccess Elements of an Array Using PointerSwap Numbers in Cyclic Order Using Call by ReferenceFind the Frequency of Characters in a StringFind the Number of Vowels, Consonants, Digits and White Spaces in a StringRemove all Characters in a String Except AlphabetsFind the Length of a StringConcatenate Two StringsCopy StringsSort Elements in Lexicographical Order (Dictionary Order)
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Increment ++ and Decrement -- Operator Overloading in C++ ProgrammingSubtract Complex Number Using Operator Overloading

C++ Program to Concatenate Two Strings

To understand this example, you should have the knowledge of the following C++ programming topics:

You can concatenate two string objects in C++ using + operator.

Example 1: Concatenate String Objects


              

#include <iostream>
using namespace std;

int main()
{
    string s1, s2, result;

    cout << "Enter string s1: ";
    getline (cin, s1);

    cout << "Enter string s2: ";
    getline (cin, s2);

    result = s1 + s2;

    cout << "Resultant String = "<< result;

    return 0;
}

Output


              

Enter string s1: C++ Programming
Enter string s2:  is awesome.
Resultant String = C++ Programming is awesome.

You can concatenate two C-style strings in C++ using strcat() function.

Example 2: Concatenate C-style Strings


              

#include <iostream>
#include <cstring>
using namespace std;

int main()
{
    char s1[50], s2[50];

    cout << "Enter string s1: ";
    cin.getline(s1, 50);

    cout << "Enter string s2: ";
    cin.getline(s2, 50);

    strcat(s1, s2);

    cout << "s1 = " << s1 << endl;
    cout << "s2 = " << s2;

    return 0;
}

Output


              

Enter string s1: I love
Enter string s2:  C++ programming
s1 = I love C++ programming
s2 =  C++ programming

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