#include<stdio.h>
#include <math.h>

float cal(float x1,float y1,char op1); // prototype for function cal


int main()
{
	float x,y,result;
	char op;
	
	printf("\n enter the values and operator\n");
	scanf("%f %f %c",&x,&y,&op);
	
	if(op=='+' || op=='-' || op=='*' || op=='/' || op=='^')
	{	
		result=cal(x,y,op); // function call to cal
		printf("%f %c %f is %f",x,op,y,result);
	}
	else
		printf("\n error");
	return 0;
}


// defining function for cal

float cal(float x1,float y1,char op1)
{
	float result1;
	switch(op1)
	{
		case '+' : result1=x1+y1;
			   break;

		case '-' : result1=x1-y1;
			   break;

		case '*' : result1=x1*y1;
			   break;

		case '/' : result1=x1/y1;
			   break;

		case '^' : result1=pow(x1,y1);
			   break;
	}

	return result1;
}