piecewise function Evaluation If statement!

On-Machine content: Solving piecewise functions with an if statement

The purpose of the machine: branch structure programming

/*

* Copyright (c) 2012, Computer College, Yantai University

* All rights reserved.

* Author: Xu Benxi

* Date of Completion: October 25, 2012

* Version Number: v1.0

*

* Input Description: X,x is not a negative number

* Problem Description: To find the value of the independent variable x as a piecewise function. Y=x (0<=X<2), y=x^2+2 (2<=x<6)

, y= (x+1) ^ (1/2) (6<=x<10), y=1/(x+1) (x>=10)

* Program output: value of y

* Problem Analysis: First determine the value of x and then do the processing

* Algorithm design: Using the IF statement to deal with

*/

My Code:

#include <iostream>
#include <Cmath>
using namespace std;
int main ()
{
	double x,y;
	cout<< "Please enter the value of x:";
	cin>>x;
	if (x<0)
		cout<< "Input error!" <<endl;
	else
		
	{if (x<2&&x>=0)
	y=x;
	
	else
		if (x<6&&x>=2)
			Y=1+pow (x,2);
		else
			if (x<10&&x>=6)
				y=sqrt (x+1);
			else
				if (x>=10)
					y=1/(x+1);
				cout<< "y=" <<Y<<ENDL;}
	
				return 0;
}

Results screenshot:

My summary is not skilled enough to keep the passion