#include<stdio.h>
int main()
{
	float x,y,sum;
	int answer;
	int power=0;
	printf("please enter 2 numbers:\n");
	scanf_s("%f %f",&x,&y);
	printf("enter your choice:\n 1 - add\n 2 - sub\n 3- div\n 4 - mul \n 5 - power\n:");
	scanf_s("%d",&answer);

		switch (answer){
		case 1:
			sum=x+y;
			printf("add is:%f",sum);
			break;
		case 2:
			sum=x-y;
			printf("sub is:%f",sum);
			break;
		case 3:
			sum=x/y;
			printf("div is:%f",sum);
			break;
    	        case 4:
			sum=x*y;
			printf("mul is:%f",sum);
			break;
                case 5:
			power=y;
			sum=1;
			while(power){
			sum*=x;
			power--;
			}
			printf("power is:%f",sum);
			break;
		default:
			printf("you are an idiot");
			break;
	}
	return 0;}