C++ Exercises: Create a new string from a given string without the first and last character

Last update on April 07 2025 12:56:31 (UTC/GMT +8 hours)

Remove First/Last 'a' or Return Original

Write a C++ program to create a string from a given string without the first and last character. This is possible if the first or last characters are 'a' otherwise return the original given string.

Sample Solution:

C++ Code :

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

// Function that modifies the input string by removing 'a' from the beginning or end
string test(string s1)
{
    // Check if the length of s1 is greater than 0 and the last character is 'a'
    if (s1.length() > 0 && s1.substr(s1.length() - 1) == "a")
    {
        s1 = s1.erase(s1.length() - 1); // Remove the last character from s1
    }

    // Check if the length of s1 is greater than 0 and the first character is 'a'
    if (s1.length() > 0 && s1.substr(0, 1) == "a")
    {
        s1 = s1.erase(0, 1); // Remove the first character from s1
    }

    return s1; // Return the modified string
}

// Main function
int main() 
{
    cout << test("abcab") << endl;    // Output for "abcab"
    cout << test("python") << endl;   // Output for "python"
    cout << test("abcda") << endl;    // Output for "abcd"
    cout << test("jython") << endl;   // Output for "jython"
    return 0;    // Return statement indicating successful termination of the program
}

Sample Output:

bcab
python
bcd
jython

Visual Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a C++ program to remove the first and/or last character from a string if they are 'a'; otherwise, return the string unchanged.
• Write a C++ program that reads a string and trims the character 'a' from the beginning and/or end if present, printing the result.
• Write a C++ program to check the first and last characters of a string for 'a' and remove them if found, else return the original string.
• Write a C++ program that conditionally strips 'a' from the boundaries of a string and outputs the modified string only when applicable.

C++ Code Editor:

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