How to concatenate multiple C++ strings on one line?

Here we will see how to concatenate multiple strings in one line in C++. There are few different methods to do that. The easiest method is by using the plus (+) operator. The strings can be concatenated using +. We can place + sign between two strings to make them concatenated.

Input: Some strings “str1”, “str2”, “str3”
Output: Concatenated string “str1str2str3”

Algorithm

Step 1: Take some strings
Step 2: Concatenate them by placing + sign between them
Step 3: Display the string
Step 4: End

Example Code

#include <iostream>
using namespace std;
int main() {
   string str1, str2, str3;
   str1 = "Hello";
   str2 = "C++";
   str3 = "World";
   string res = str1 + str2 + str3;
   cout << res;
}

Output

HelloC++World