C++ Exercises: Create a new string of the first half of a given string of even length

Last update on April 07 2025 12:56:39 (UTC/GMT +8 hours)

First Half of Even-Length String

Write a C++ program to create the string of the first half of a given string of even length.

Sample Solution:

C++ Code :

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

using namespace std; // Use the standard namespace

// Function definition to return the first half of the input string
string test(string s1) // Function named 'test' accepting a string parameter 's1'
{
    return s1.substr(0, s1.length() / 2); // Return a substring from index 0 to half the length of the input string 's1'
}

// Main function - entry point of the program
int main() 
{
    cout << test("Hello") << endl;
    cout << test("Hi") << endl;
    return 0; // Indicate successful completion of the program
}

Sample Output:

He
H

Visual Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a C++ program to obtain and print the first half of a string with an even number of characters.
• Write a C++ program that reads an even-length string and outputs the substring representing its first half.
• Write a C++ program to split a string of even length into two equal parts and print the first part.
• Write a C++ program that takes an even-length string as input and extracts the first half using substring functions.

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