explaination.md

Question [4]

WAP to Compute
i) square root of number
ii) Square of number
iii) Cube of number
iv) check for prime
v) factorial of number
vi) prime factors of given number using switch

Algorithm

1. Start the program
2. Accept the choice
3. Perform operations respectively
4. print the result
5. End the program

Code

#include <stdio.h>
#include <math.h>
int main()
{
    float n;
    int choice;
    int flagPrime = 0, factorial = 1;
    printf("Enter your choice:");
    printf("\n1. Square root");
    printf("\n2. Square");
    printf("\n3. Cube");
    printf("\n4. Check Prime");
    printf("\n5. Find factorial");
    printf("\n6. Find Prime factors\n");
    scanf("%d", &choice);
    printf("\nEnter Number: ");
    scanf("%f", &n);

    switch (choice)
    {
    case 1:
        printf("\nSquare Root: %f", sqrt(n));
        break;
    case 2:
        printf("\nSquare: %f", n * n);
        break;
    case 3:
        printf("\nCube: %f", n * n * n);
        break;
    case 4:
        // Checking if prime
        for (int i = 1; i <= n; i++)
        {
            if ((int)n % i == 0)
            {
                flagPrime++;
            }
        }
        if (flagPrime == 2)
        {
            printf("\nNumber is Prime");
        }
        else
        {
            printf("\nNumber is not Prime");
        }
        break;
    case 5:
        // Finding factorial
        for (int j = 1; j <= n; j++)
        {
            factorial = factorial * j;
        }
        printf("\nFactorial: %d", factorial);
        break;
    case 6:
        // Finding all Prime factors
        printf("\nPrime Factors: ");
        while ((int)n % 2 == 0)
        {
            printf("%d ", 2);
            n = n / 2;
        }
        for (int i = 3; i <= sqrt(n); i += 2)
        {
            while ((int)n % i == 0)
            {
                printf("%d ", i);
                n = n / i;
            }
        }
        if (n > 2)
        {
            printf("%d", (int)n);
        }
        printf("\n");
        break;
    default:
        printf("\nWrong choice!!");
        break;
    }
    printf("\n");

    return 0;
}

Output

Code