Example: Replacing Substrings

// Replacing Substrings
#include <iostream>
#include <string>
using namespace std;

int main() {
    // Step 1: Declare an initial string
    string original = "I like apples and bananas.";
    cout << "Original string: " << original << endl;

    // Step 2: Replace a substring
    // Syntax: replace(start_index, length_to_replace, replacement_string)
    size_t pos = original.find("apples");
    if (pos != string::npos) {
        original.replace(pos, 6, "oranges"); // Replace "apples" (6 chars) with "oranges"
        cout << "After replacing 'apples': " << original << endl;
    }

    // Step 3: Replace a substring with something shorter
    original = "The quick brown fox.";
    pos = original.find("brown");
    if (pos != string::npos) {
        original.replace(pos, 5, "red"); // Replace "brown" (5 chars) with "red"
        cout << "After replacing 'brown': " << original << endl;
    }

    // Step 4: Replace a substring with something longer
    original = "Hello World!";
    original.replace(6, 5, "C++ Community"); // Replace "World" (5 chars) with "C++ Community"
    cout << "After replacing 'World': " << original << endl;

    return 0;
}