C++ Exercises: Create a new string using the two middle characters of a given string of even length

Last update on December 20 2024 12:28:28 (UTC/GMT +8 hours)

Two Middle Characters of Even-Length String

Write a C++ program to create a string using the two middle characters of a given string of even length (at least 2).

Sample Solution:

C++ Code :

#include <iostream> // Including the input/output stream library

using namespace std; // Using the standard namespace

// Function that extracts a substring of length 2 from the middle of the input string
string test(string s1)
{
    return s1.substr(s1.length() / 2 - 1, 2); // Extracts a substring of length 2 starting from the middle (or slightly left of the middle) of the input string
}

// Main function
int main() 
{
    cout << test("Hell") << endl; // Output the result of test function with "Hell"
    cout << test("JS") << endl;   // Output the result of test function with "JS"
    return 0;    // Return statement indicating successful termination of the program
}

Sample Output:

el
JS

Visual Presentation:

Flowchart:

C++ Code Editor:

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