Mastering String Concatenation in C++

Getting Started with C++ Programming

To unlock the full potential of string concatenation in C++, it’s essential to have a solid understanding of C++ arrays and strings. If you’re new to these concepts, take a moment to review them before proceeding.

The Power of the + Operator

When working with string objects, you can combine two strings using the + operator. This simple yet powerful technique allows you to merge strings with ease.

std::string str1 = "Hello, ";
std::string str2 = "world!";
std::string result = str1 + str2;
std::cout << result << std::endl;

Output: Hello, world!

As you can see, the resulting string is a seamless blend of the two original strings.

The Straitforward Approach: Using strcat()

But what about C-style strings? Fear not, for the strcat() function has got you covered. This trusty function enables you to concatenate C-style strings with minimal fuss.

char str1[20] = "Hello, ";
char str2[10] = "world!";
strcat(str1, str2);
std::cout << str1 << std::endl;

Output: Hello, world!

With these two methods under your belt, you’ll be well on your way to becoming a string concatenation master.

Want to learn more? Check out our related article on copying strings in C++.