C++ String Exercises: If 2 characters are separated by 2 places in a string

Last update on April 11 2025 12:48:29 (UTC/GMT +8 hours)

6. Check Separation of 'e' and 'g' by Exactly 2 Characters

Write a C++ program to check whether the characters e and g are separated by exactly 2 places anywhere in a given string at least once.

Sample Solution:

C++ Code :

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

using namespace std; // Using the standard namespace

// Function to check for 'e', 'g', 'E', 'G' pattern in the string
bool Check_chars(string text) {
    int len = int(text.size()); // Getting the length of the string

    // Looping through the string to check for the pattern
    for (int i = 0; i < len; i++) {
        if (text[i] == 'e' || text[i] == 'E') { // Check for 'e' or 'E'
            // Check if the characters at i+2 index form 'g' or 'G'
            if (i + 2 < len && (text[i + 2] == 'g' || text[i + 2] == 'G'))
                return true; // Return true if the pattern is found
        }
        if (text[i] == 'g' || text[i] == 'G') { // Check for 'g' or 'G'
            // Check if the characters at i+2 index form 'e' or 'E'
            if (i + 2 < len && (text[i + 2] == 'e' || text[i + 2] == 'E'))
                return true; // Return true if the pattern is found
        }
    }
    return false; // Return false if the pattern is not found in the entire string
}

// Main function
int main() {
    // Checking the pattern in different strings and displaying the result
    cout << "Original string: eagerer -> " << Check_chars("eagerer") << endl;
    cout << "\nOriginal string: eaglets -> " << Check_chars("eaglets") << endl;
    cout << "\nOriginal string: eardrop -> " << Check_chars("eardrop") << endl;
    cout << "\nOriginal string: After eagling the Road Hole on Thursday, he missed an 8-footer for birdie Friday. -> ";
    cout << Check_chars("After eagling the Road Hole on Thursday, he missed an 8-footer for birdie Friday.") << endl;
    return 0; // Return 0 to indicate successful completion
}

Sample Output:

Original string: eagerer -> 1

Original string: eaglets -> 1

Original string: eardrop -> 0

Flowchart:

For more Practice: Solve these Related Problems:

Write a C++ program to verify if in a string the letters 'e' and 'g' appear with exactly two characters between them at least once.
Write a C++ program that checks if any occurrence of 'e' in a string is followed exactly two places later by 'g'.
Write a C++ program to scan a string and output true if the substring pattern "e__g" exists, where underscores represent any characters.
Write a C++ program that reads a string and uses a sliding window to check for an 'e' and 'g' separated by exactly two characters.

C++ Code Editor:

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