How do I compare strings in C++?

How do I compare strings in C++?

In C++, you can compare strings using the ==, !=, <, >, <=, and >= operators. You can also use the compare() method.

Can you show me an example of using the compare() method?

Sure! Here's an example:

std::string str1 = "Hello";
std::string str2 = "World";

if (str1.compare(str2) == 0) {
    std::cout << "Strings are equal.";
} else {
    std::cout << "Strings are not equal.";
}

What if I want to ignore case when comparing?

You can convert both strings to the same case using std::transform before comparing. Here's an example:

#include <algorithm>
#include <cctype>

std::string str1 = "Hello";
std::string str2 = "hello";

std::transform(str1.begin(), str1.end(), str1.begin(), ::tolower);
std::transform(str2.begin(), str2.end(), str2.begin(), ::tolower);

if (str1 == str2) {
    std::cout << "Strings are equal (case insensitive).";
}