C++ Exercises: Create a new string using 3 copies of the first 2 characters of a given string

Last update on August 13 2025 12:46:02 (UTC/GMT +8 hours)

3 Copies of First 2 Characters or Full String

Write a C++ program to create a new string using 3 copies of the first 2 characters of a given string. If the length of the given string is less than 2 use the whole string.

Sample Solution:

C++ Code :

#include <iostream> // Including the input/output stream library
using namespace std; // Using the standard namespace

// Function that performs a specific operation on the input string based on its length
string test(string s1)
{
    string extra_Front = ""; // Declare a string variable to store a substring

    // Check if the length of s1 is less than 2
    if (s1.length() < 2)
    {
        return s1 + s1 + s1; // Return concatenation of s1 with itself thrice if its length is less than 2
    }
    else
    {
        extra_Front = s1.substr(0, 2); // Store the substring of s1 from index 0 to 1 in extra_Front
        return extra_Front + extra_Front + extra_Front; // Return concatenation of extra_Front with itself thrice
    }
}

// Main function
int main() 
{
    cout << test("abc") << endl;    // Output for "abc"
    cout << test("Python") << endl; // Output for "Python"
    cout << test("J") << endl;      // Output for "J"
    return 0;    // Return statement indicating successful termination of the program
}

Sample Output:

ababab
PyPyPy
JJJ

Visual Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a C++ program that creates a new string consisting of three repetitions of the first two characters of an input string; if the string is shorter than 2 characters, repeat the entire string three times.
• Write a C++ program to read a string and output three copies of its first two letters, or the whole string repeated thrice if it is too short.
• Write a C++ program that constructs a new string by duplicating the first two characters three times; if the string length is less than 2, use the whole string for replication.
• Write a C++ program that checks the length of an input string and outputs a tripled copy of its first two characters, defaulting to the full string if necessary.

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