In C++, string concatenation refers to combining two or more strings to create a single, unified text value. This can be done using the + operator or the append() method.
Concatenation Using + Operator
The + operator allows strings to be combined effortlessly.
Example
Here, the strings bikeBrand and bikeModel are joined using +, resulting in “Ducati Panigale V4”.
#include <iostream>
#include <string>
using namespace std;
int main() {
string bikeBrand = "Ducati ";
string bikeModel = "Panigale V4";
string fullName = bikeBrand + bikeModel; // Combines the strings
cout << "Motorcycle: " << fullName;
return 0;
}
Adding Spaces During Concatenation
To ensure clarity, spaces can be included manually in the concatenation.
Example
This method creates a space between carBrand and carModel, forming “BMW M3”.
#include <iostream>
#include <string>
using namespace std;
int main() {
string carBrand = "BMW";
string carModel = "M3";
string fullName = carBrand + " " + carModel; // Adds a space between the strings
cout << "Car: " << fullName;
return 0;
}
Concatenation Using append()
C++ strings are objects, and they come with built-in functions such as append() for concatenation.
Example
Here, append() merges jacketBrand and jacketType, resulting in “Dainese Leather Racing”.
#include <iostream>
#include <string>
using namespace std;
int main() {
string jacketBrand = "Dainese ";
string jacketType = "Leather Racing";
string fullDescription = jacketBrand.append(jacketType); // Combines the strings
cout << "Jacket: " << fullDescription;
return 0;
}
