C++ Exercises: Create a new string with the last char added at the front and back of a given string of length 1 or more

Last update on April 07 2025 12:57:03 (UTC/GMT +8 hours)

Add Last Character to Front and Back

Write a C++ program to create a string with the last character added at the front and back of a given string of length 1 or more.

Sample Solution:

C++ Code :

#include <iostream>
using namespace std;

// Function to modify a string by appending its last character at both ends
string test(string str)
{
    // Extract the last character of the string
    string s = str.substr(str.length() - 1);

    // Append the last character both at the beginning and end of the string
    return s + str + s;
}

// Main function
int main() 
{
    cout << test("Red") << endl;    // Output the result of test function with string "Red"
    cout << test("Green") << endl;  // Output the result of test function with string "Green"
    cout << test("1") << endl;      // Output the result of test function with string "1"
    return 0;    // Return 0 to indicate successful execution of the program
}

Sample Output:

dRedd
nGreenn
111

Visual Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a C++ program to take a string and append its last character to both the beginning and the end of the string.
• Write a C++ program that creates a new string by adding the last character of an input string to its front and back.
• Write a C++ program that reads a string and constructs a modified version by pre-pending and appending its last character.
• Write a C++ program to output a string that has its final character duplicated at both ends, handling strings of length one.

C++ Code Editor:

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