- Trending Categories
- Data Structure
- Networking
- RDBMS
- Operating System
- Java
- iOS
- HTML
- CSS
- Android
- Python
- C Programming
- C++
- C#
- MongoDB
- MySQL
- Javascript
- PHP

- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who

# Count all possible N digit numbers that satisfy the given condition in C++

In this tutorial, we will be discussing a program to find the number of possible N digit numbers that satisfy the given condition.

For this we will be provided with an integer. Our task is to check which one of number having N digits follow

Number + Reverse(Number) = 10N -1

## Example

#include <bits/stdc++.h> using namespace std; //returning the count of numbers string count_num(int N){ if (N % 2 == 1) return 0; string result = "9"; for (int i = 1; i <= N / 2 - 1; i++) result += "0"; return result; } int main(){ int N = 4; cout << count_num(N); return 0; }

## Output

90

- Related Questions & Answers
- Count subsets that satisfy the given condition in C++
- Find numbers a and b that satisfy the given condition in C++
- Count index pairs which satisfy the given condition in C++
- Count of all N digit numbers such that num + Rev(num) = 10^N - 1 in C++
- Count n digit numbers divisible by given number in C++
- Find n positive integers that satisfy the given equations in C++
- Find permutation of first N natural numbers that satisfies the given condition in C++
- Count triplet pairs (A, B, C) of points in 2-D space that satisfy the given condition in C++
- Finding all the n digit numbers that have sum of even and odd positioned digits divisible by given numbers - JavaScript
- Count n digit numbers not having a particular digit in C++
- Program to find number of subsequences that satisfy the given sum condition using Python
- How to count the number of values that satisfy a condition in an R vector?
- Count Possible Decodings of a given Digit Sequence in C++
- Count numbers from 1 to n that have 4 as a digit in C++
- Numbers At Most N Given Digit Set in C++

Advertisements