hamming distance c++

To calculate the Hamming distance in C++, follow these steps:

1. Start by including the necessary header file for C++ input/output operations:

#include <iostream>

1. Create a function called hammingDistance that takes two strings as parameters and returns an integer value representing the Hamming distance:

int hammingDistance(std::string str1, std::string str2) {
    // Function implementation goes here
}

1. Inside the hammingDistance function, declare and initialize a variable called distance to 0. This variable will keep track of the number of differing characters between the two strings:

int distance = 0;

1. Use a loop to iterate through each character of the strings. You can use a for loop with the loop variable i ranging from 0 to the length of the strings minus 1:

for (int i = 0; i < str1.length(); i++) {
    // Compare characters at index i of both strings
}

1. Inside the loop, check if the characters at index i of both strings are different. If they are, increment the distance variable by 1:

if (str1[i] != str2[i]) {
    distance++;
}

1. After the loop completes, return the value of the distance variable:

return distance;

1. Finally, you can test the hammingDistance function by calling it with two strings and printing the result:

int main() {
    std::string str1 = "hello";
    std::string str2 = "hella";

    int result = hammingDistance(str1, str2);
    std::cout << "Hamming distance: " << result << std::endl;

    return 0;
}

This is a basic implementation of calculating the Hamming distance between two strings in C++. You can modify or enhance the code based on your specific requirements.