Calculator

#include <stdio.h>
int main(int argc, char const *argv[])
{
    int x;
    do
    {
        printf("WELCOME TO BETTER THAN CASIO  CALCULATOR PROGRAM\n");
        printf("Kindly Choose Among The Following Numbers For The Operators:1,2,3,4\n");
        printf("Where -> 1 is for Addition\n");
        printf("Where -> 2 is for Subtraction\n");
        printf("Where -> 3 is for Multiplicaton\n");
        printf("Where -> 4 is for Division\n");
        printf("If you wish to exit press \"5\"\n");
        scanf("%d", &x);

        switch (x)
        {
        case 1:
            printf("The selected number is for \"ADDITION\"\n");
            break;
        case 2:
            printf("The selected number is for \"SUBTRACTION\"\n");
            break;
        case 3:
            printf("The selected number is for \"MULTIPLICATION\"\n");
            break;
        case 4:
            printf("The selected number is for \"DIVISION\"\n");
            break;
        case 5:
            printf("Byeee....See You Again!!\n");
            return 0;
            break;
        default:
            printf("PLEASE CHOOSE NUMBERS BETWEEN 1 TO 5\n");
            break;
        }
    } while (x > 5);
    if (x == 1)
    {
        float add1, add2;
        printf("Enter Number 1 for Addition\n");
        scanf("%f", &add1);
        printf("Enter Number 2 for Addition\n");
        scanf("%f", &add2);
        printf("The sum of 2 numbers is: %.2f\n", add1 + add2);
    }
    else if (x == 2)
    {
        float sub1, sub2;
        printf("Enter Number 1 for Subtraction\n");
        scanf("%f", &sub1);
        printf("Enter Number 2 for Subtraction\n");
        scanf("%f", &sub2);
        printf("The sum of 2 numbers is: %.2f", sub1 - sub2);
    }
    else if (x == 3)
    {
        float mul1, mul2;
        printf("Enter Number 1 for Multiplication\n");
        scanf("%f", &mul1);
        printf("Enter Number 2 for Multiplication\n");
        scanf("%f", &mul2);
        printf("\nThe multiplication of two numbers is: %.2f\n", mul1 * mul2);
    }
    else if (x == 4)
    {
        float div1, div2;
        printf("Enter Number 1 for Division\n");
        scanf("%f", &div1);
        printf("Enter Number 2 for Division\n");
        scanf("%f", &div2);
        printf("\nThe multiplication of two numbers is: %.2f\n", div1 / div2);
    }
    int x1;
    do
    {
        printf("\n***************************\n");
        printf("\nDo you want to calculate X^n of a number?\n \nIf YES press 1 If NO press 0\n");
        scanf("%d", &x1);
        if (x1 == 1)
        {
            float power = 1, base, index;
            printf("\nEnter Base(X): ");
            scanf("%f", &base);
            printf("Enter Index(n): ");
            scanf("%f", &index);
            for (float i = 0; i < index; i++)
            {
                power = power * base;
            }
            printf("The answer of your entered number is: %.2f\n", power);
            printf("*******************************************\n");
        }
        else
        {
            printf("PROGRAM KIYA HAI ITNI MEHNAT SE TO CALCULATE TO KARNA HI PADEGA !!\n");
        }
    } while (x1 != 1);
    printf("For Factorial\n");
    int n;
    long int fact = 1;
    do{
    printf("Enter a positive integer for finding its factorial\n");
    scanf("%d", &n);
    if (n < 0)
    {
        printf("ENTER A POSITIVE INTEGER\n");
    }
    else
    {
        for (int i = 1; i <= n; i++)
        {
            fact *= i;
        }
        printf("The Factorial of %d is %d\n", n, fact);
    }
    }while (n == 1);
    printf("\nTHANKS FOR USING MY PROGRAM :)");
    return 0;
}