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C Program to Check Prime Number Using Efficient Logic

  Introduction A prime number is a number that has exactly two distinct positive divisors: 1 and itself. In this program, we check whether a given number is prime or not using a simple and efficient logic. This type of program is commonly used in mathematics, competitive programming, and basic algorithm learning for beginners in C programming. Problem Statement The task is to write a C program that determines whether a given integer is a prime number or not. The program takes a single integer input from the user and analyzes its divisibility. If the number has no divisors other than 1 and itself, it should be identified as a prime number; otherwise, it is not prime. This problem is important in number theory and has practical relevance in areas such as cryptography, data validation, and algorithm design.  Algorithm / Logic Explanation To check whether a number is prime, we need to verify that it is not divisible by any number other than 1 and itself. The algorithm follows a si...
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C++ Program to Check Even or Odd Using Inline Function

C++ Inline Function Example – Even or Odd

C++ Program to Check Even or Odd Using Inline Function


#include <iostream>
using namespace std;

inline bool isEven(int n)
{
    return (n % 2 == 0);
}

int main()
{
    int n;
    cout << "Enter a number: ";
    cin >> n;

    if(isEven(n))
        cout << "Even number";
    else
        cout << "Odd number";

    return 0;
}

📘 Explanation:

This program demonstrates the use of an inline function in C++ to check whether a given number is even or odd.

The function isEven() is declared using the inline keyword. It returns true if the number is divisible by 2, otherwise it returns false.

Inline functions are preferred for small logical operations because they help reduce function call overhead and improve performance.

🧾 Sample Output:

Enter a number:
6
Even number

🔑 Keywords:

C++ inline function, even odd program, C++ number checking, inline function example, C++ basics

🔍 Search Description:

Learn how to check whether a number is even or odd in C++ using an inline function. This program explains the concept with example output.

📌 Hashtags:

#CPlusPlus #InlineFunction #EvenOdd #CPPBasics #Programming #1printf

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