String Comparison

In C++, comparing strings is done using the == operator. This operator compares the content of the two strings and returns true if they are equal, and false otherwise.

Here's an example:

1std::string str1 = "Hello";
2std::string str2 = "World";
3
4if (str1 == str2) {
5    std::cout << "The strings are equal." << std::endl;
6} else {
7    std::cout << "The strings are not equal." << std::endl;
8}

This code will output:

1The strings are not equal.

It's important to note that string comparison is case-sensitive. So, for example, "hello" and "Hello" will be considered different strings.

In addition to the == operator, you can also use other comparison operators such as !=, <, >, <=, and >= to compare strings based on their lexicographical order. These operators compare the strings character by character, starting from the first character.

1std::string str1 = "Hello";
2std::string str2 = "World";
3
4if (str1 < str2) {
5    std::cout << "str1 is less than str2." << std::endl;
6} else {
7    std::cout << "str1 is greater than or equal to str2." << std::endl;
8}

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#include <iostream>

#include <string>

​

int main() {

    std::string str1 = "Hello";

    std::string str2 = "World";

​

    if (str1 == str2) {

        std::cout << "The strings are equal." << std::endl;

    } else {

        std::cout << "The strings are not equal." << std::endl;

    }

​

    return 0;

}