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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...

C++ Program to Find Factorial Using Inline Function

C++ Inline Function – Factorial of a Number

C++ Program to Find Factorial Using Inline Function


#include <iostream>
using namespace std;

inline int factorial(int n)
{
    int fact = 1;
    for(int i = 1; i <= n; i++)
        fact *= i;
    return fact;
}

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

    cout << "Factorial = " << factorial(n);
    return 0;
}
  

๐Ÿ“˜ Explanation:

This C++ program calculates the factorial of a number using an inline function.

The inline function factorial() multiplies all integers from 1 to n using a loop and returns the final result.

Declaring the function as inline suggests the compiler to replace the function call with the function body, improving performance for small functions.

๐Ÿงพ Sample Output:

Enter a number:
5
Factorial = 120
  

๐Ÿ”‘ Keywords:

C++ inline function factorial, factorial program in C++, inline factorial, C++ loop programs, C++ basics

๐Ÿ” Search Description:

Learn how to calculate factorial of a number in C++ using inline function. This example includes code, explanation, and output.

๐Ÿ“Œ Hashtags:

#CPlusPlus #InlineFunction #FactorialProgram #CPPBasics #LoopInCPP #1printf

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