C++ Exercises: Create a new string from a given string. If the first or first two characters is 'a', return the string without those 'a' characters otherwise return the original given string
Remove First/First Two 'a's if Present
Write a C++ program to create a new string from a given string. If the first or first two characters are 'a', return the string without those 'a' characters, otherwise return the original string.
Sample Solution:
C++ Code :
#include <iostream> // Including the input/output stream library
using namespace std; // Using the standard namespace
// Function that removes 'a' from specific positions within the input string
string test(string s1)
{
// Check if the length of s1 is 1 and the only character is 'a'
if (s1.length() == 1 && s1.substr(0, 1) == "a")
{
s1 = s1.erase(0, 1); // Remove the only character from s1
}
// Check if the length of s1 is greater than 1
if (s1.length() > 1)
{
// Check if the second character of s1 is 'a'
if (s1.substr(1, 1) == "a")
{
s1 = s1.erase(1, 1); // Remove the second character from s1
}
// Check if the first character of s1 is 'a'
if (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;
cout << test("python") << endl;
cout << test("aacda") << endl;
cout << test("jython") << endl;
return 0; // Return statement indicating successful termination of the program
}
Sample Output:
bcab python cda jython
Visual Presentation:

Flowchart:

For more Practice: Solve these Related Problems:
- Write a C++ program that removes one or two leading 'a' characters from a string if they are present; otherwise, it returns the original string.
- Write a C++ program to check the beginning of a string for 'a' or "aa" and remove those characters, printing the modified result.
- Write a C++ program that reads a string and strips out the initial 'a's (up to two) if found, otherwise leaving the string intact.
- Write a C++ program to process a string by removing the first one or two characters if they are 'a', and then output the result.
C++ Code Editor:
Contribute your code and comments through Disqus.
Previous: Write a C++ program to create a new string from a given string without the first and last character if the first or last characters are 'a' otherwise return the original given string.
Next: Write a C++ program to check a given array of integers of length 1 or more and return true if 10 appears as either first or last element in the given array.
What is the difficulty level of this exercise?