C++ Exercises: Check if the number of 3's is greater than the number of 5's

Last update on April 07 2025 12:57:36 (UTC/GMT +8 hours)

Compare Count of '3's and '5's in Array

Write a C++ program to check if the number of 3's is greater than the number of 5's.

Sample Solution:

C++ Code :

#include <iostream>  // Including input-output stream header file

using namespace std;  // Using standard namespace

// Function definition that compares the count of occurrences of 3 and 5 in an array
static bool test(int nums[], int arr_length)
{
    int no_3 = 0, no_5 = 0;  // Initializing variables to count occurrences of 3 and 5

    // Loop through the array to count occurrences of 3 and 5
    for (int i = 0; i < arr_length; i++)
    {
        if (nums[i] == 3)  // Checking if the element is equal to 3
            no_3++;  // Incrementing count for 3 if the element is 3
        if (nums[i] == 5)  // Checking if the element is equal to 5
            no_5++;  // Incrementing count for 5 if the element is 5
    }

    return no_3 > no_5;  // Returning true if occurrences of 3 are greater than occurrences of 5, otherwise false
}

int main() 
{  
    int nums1[] = {1, 5, 6, 9, 3, 3};  // Initializing array nums1 with various integers including 3 and 5
    int arr_length = sizeof(nums1) / sizeof(nums1[0]);  // Calculating length of array nums1

    // Calling test function with nums1 and displaying the result (true or false)
    cout << test(nums1, arr_length) << endl; 

    int nums2[] = {1, 5, 5, 5, 10, 17};  // Initializing array nums2 with multiple occurrences of 5
    arr_length = sizeof(nums2) / sizeof(nums2[0]);  // Calculating length of array nums2

    // Calling test function with nums2 and displaying the result (true or false)
    cout << test(nums2, arr_length) << endl;

    int nums3[] = {1, 3, 3, 5, 5, 5};  // Initializing array nums3 with multiple occurrences of 3 and 5
    arr_length = sizeof(nums3) / sizeof(nums3[0]);  // Calculating length of array nums3

    // Calling test function with nums3 and displaying the result (true or false)
    cout << test(nums3, arr_length) << endl;

    return 0;  // Returning 0 to indicate successful completion of the program
}

Sample Output:

1
0
0

Visual Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a C++ program to count the number of 3's and 5's in an array and return true if the count of 3's exceeds that of 5's.
• Write a C++ program that reads an array of integers and outputs a boolean result based on whether there are more 3's than 5's.
• Write a C++ program to compare the frequencies of 3 and 5 in an input array and print 1 if the count of 3's is greater.
• Write a C++ program that processes an integer array and returns true if the number of 3's is strictly larger than the number of 5's.

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