C++ is a widely used general programming language. If you want to get started using C++ on Windows download Code Blocks here, specifically the file named, codeblocks-17.12mingw-setup.exe. The install should be nice and easy.
In the file menu open an empty new file. In the new file post the following code:
using namespace std;
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;
. . . which can be found here. This code can be used to join together two different strings.
Save the file with the .cpp extension.
Then go to Build . . . Run
You will be prompted to join together separate strings like this: