Determine the largest and the smallest

As title, I'm just a new C++ beginner (a.k.a noob), currently I have an exercise to determine the largest and the smallest from 3 different integers.

Code:

// Read three different integers and hence determine the largest and the smallest integer
#include <iostream> // program performs input and output

	using std::cout; // program uses cout
	using std::cin; // program uses cin
	using std::endl; // program uses endl

// function main begins program execution
int main()
{
	int x; // first input integer
	int y; // second input integer
	int z; // third input integer

	cout << "Input three different integers: "; // prompt user for data
	cin >> x >> y >> z; // read three integers from user

	if ( x < y )
		cout << "Smallest is " << x << endl;
	if ( x < z )
		cout << "Smallest is " << x << endl;
	if ( y < x )
		cout << "Smallest is " << y << endl;
	if ( y < z )
		cout << "Smallest is " << y << endl;
	if ( z < x )
		cout << "Smallest is " << z << endl;
	if ( z < y )
		cout << "Smallest is " << z << endl;

	return 0; // indicate program executed successfully

} // end function main

With this, I got the result as below when I entered 13, 27 and 14 :

Code:

Smallest is 13
Smallest is 13
Smallest is 14

Instead, the result suppose to be like this (forgive me for skipping the parts looking for the largest number cuz it didn't work at this moment):

Code:

Smallest is 13
Largest is 27

Geez, I'm stuck in this just at the beginning of my C++ programming learning, can anybody guide me and show me where I wrong. So far, I'd only know how to use the 'if' statement and those binary and relational operators including equality operators. Thanks

You have to use an additional variable, say smallest.
After input of all 3 variables you assign it eg. the value of x.
After that you need just 2 if statements like

Code:

if ( y < smallest ) smallest = y;

After that you just print smallest.
Kurt

Code:

int x, y, z;
int smallest, largest;

cout << "Input three different integers: "; // prompt user for data
cin >> x >> y >> z; // read three integers from user

smallest = x;
largest = x;

if(y < smallest)
	smallest = y;

if(z < smallest)
	smallest = z;

if(y > largest)
	largest = y;

if(z > largest)
	largest = z;

cout << "Smallest is: " << smallest << endl;
cout << "Largest is: " << largest << endl;

Originally Posted by ZuK

You have to use an additional variable, say smallest.
After input of all 3 variables you assign it eg. the value of x.
After that you need just 2 if statements like

Code:

if ( y < smallest ) smallest = y;

After that you just print smallest.
Kurt

Originally Posted by 39ster

Code:

int x, y, z;
int smallest, largest;
cout << "Input three different integers: "; // prompt user for data
cin >> x >> y >> z; // read three integers from user
smallest = x;
largest = x;
if(y < smallest)
	smallest = y;
if(z < smallest)
	smallest = z;
if(y > largest)
	largest = y;
if(z > largest)
	largest = z;
cout << "Smallest is: " << smallest << endl;
cout << "Largest is: " << largest << endl;

Wow, amazing, I'm studying on my own and this is the last question I need to solve in chapter 2. However, the book didn't teach me much on the skill like yours. Thanks for your helps

Another way would be to store all three numbers in an array and periodically search for the highest and smallest numbers in the array. It requires less code.
Does any of you know how to use arrays?

Originally Posted by Elysia

Does any of you know how to use arrays?

No I dont. Please tell me.
Kurt

Very funny. Wasn't referring to you.