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#include <iostream>#include <string>using namespace std; // Added for convenienceint main() { string str1, str2; // Input two strings cout << "Enter the first string: "; getline(cin, str1); cout << "Enter the second string: "; getline(cin, str2); // Concatenate the strings and display the result string concatenatedStr = str1 + " " + str2; cout << "Concatenated String: " << concatenatedStr << endl; // Find and display the length of the concatenated string cout << "Length of Concatenated String: " << concatenatedStr.length() << endl; // Extract a substring and display it string substring = concatenatedStr.substr(0, 5); cout << "Substring: " << substring << endl; return 0;}Discuss the variables displayed

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