Standard Library Strings

Snippet

Standard Library Strings

The std::string class from the C++ Standard Library handles text data much more safely than raw character arrays. You can concatenate strings with +, get their length with .length(), and iterate through characters. The toupper function converts individual characters to uppercase. Using std::string is preferred over char arrays for almost all text handling in modern C++.

snippet.cpp
cpp
#include <iostream>
#include <string>
int main() {
    std::string name = "Alice";
    std::string greeting = "Hello, " + name + "!";
    
    std::cout << greeting << std::endl;
    std::cout << "Length: " << greeting.length() << std::endl;
    std::cout << "Upper: ";
    for (char c : greeting) {
        std::cout << (char)std::toupper(c);
    }
    std::endl(std::cout);
    return 0;
}

Breakdown

#include <string>

Header file required for std::string class

std::string name = "Alice";

Declaration of a string variable holding text

+ operator

String concatenation operator joins multiple strings together

greeting.length()

Member function returns the number of characters in the string

for (char c : greeting)

Range-based for loop iterates through each character in string

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Standard Library Strings

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