C++ Exercises: Create a new string using three copies of the last two character of a given string of length atleast two

Last update on April 07 2025 12:57:57 (UTC/GMT +8 hours)

Three Copies of Last Two Characters

Write a C++ program to create another string using three copies of the last two characters of a given string of length at least two.

Sample Solution:

C++ Code :

#include <iostream>
using namespace std;

// Function 'test' duplicates the last two characters of the input string
string test(string s1)
{
    // Extracts the last two characters of the input string 's1'
    string last2 = s1.substr(s1.length() - 2);

    // Concatenates the extracted last two characters three times to form the final output
    return last2 + last2 + last2;
}

// Main function to test the 'test' function
int main() 
{
    // Displays the output of the 'test' function for different string inputs
    cout << test("Hello") << endl;  // Output: "lololo" (duplicates "lo" three times)
    cout << test("Hi") << endl;     // Output: "HiHiHi" (duplicates "Hi" three times)
    return 0;    
}

Sample Output:

lololo
HiHiHi

Visual Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a C++ program to create a new string by concatenating three copies of the last two characters of a given string (length at least two).
• Write a C++ program that reads a string and outputs a new string made of three repetitions of its final two characters.
• Write a C++ program to extract the last two letters of a string and then print them three times consecutively.
• Write a C++ program that takes a string input and constructs a new string with three copies of its ending two-character substring.

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