﻿ C++ : Find the frequency of each digit in a given integer

# C++ Exercises: Find the frequency of each digit in a given integer

## C++ For Loop: Exercise-59 with Solution

Write a program in C++ to find the frequency of each digit in a given integer.

Visual Presentation:

Sample Solution:-

C++ Code :

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

int main() // Main function where the execution of the program starts
{
int n, i, j, ctr, r; // Declare integer variables n, i, j, ctr, and r

// Display message asking for input
cout << "\n\n Find frequency of each digit in a given integer:\n";
cout << "-----------------------------------------------------\n";
cout << " Input any number: ";
cin >> n; // Read input for the number from the user

// Loop through each digit from 0 to 9 to find their frequency
for (i = 0; i < 10; i++)
{
cout << "The frequency of " << i << " = "; // Display the current digit

ctr = 0; // Initialize the counter for the current digit's frequency

// Loop through the number to count occurrences of the current digit
for (j = n; j < 0; j = j / 10)
{
r = j % 10; // Extract the last digit of the number

if (r == i) // Check if the extracted digit is equal to the current digit being checked
{
ctr++; // Increment the counter for the current digit's frequency
}
}

// Display the frequency of the current digit
cout << ctr << endl;
}
}
``````

Sample Output:

``` Find frequency of each digit in a given integer:
-----------------------------------------------------
Input any number: 122345
The frequency of 0 = 0
The frequency of 1 = 1
The frequency of 2 = 2
The frequency of 3 = 1
The frequency of 4 = 1
The frequency of 5 = 1
The frequency of 6 = 0
The frequency of 7 = 0
The frequency of 8 = 0
The frequency of 9 = 0
```

Flowchart:

C++ Code Editor: