Help with outputting the max and min number using If Else

[Coyo]

Hi there new to the forum and new to c++ and programming (been doing it for 2 days)
Anyway I am trying to self learn using a book and an online course and i'm stuck with one of the practice problems.

the problem is: Write a program that takes in 3 numbers and outputs the biggest number and the smallest number using if else.

so far i only have it outputting the biggest of the 3 but can't figure out how to get the smallest as well.
I know this is probably really easy but my brain just feels fried at the moment and i cant think straight.

Any tips or advice pointing me in the right direction would be greatly appreciated.

My code so far.

#include <iostream>
using namespace std;

int main()
{
	int num1 = 0;
	int num2 = 0;
	int num3 = 0;

	cout << "Please enter 3 numbers leaving a space between each: ";
	cin >> num1 >> num2 >> num3;

	if (num1 > num2 && num1 > num3) 
	{
		cout << num1 << " is the biggest value." << endl;
	}
	else if (num2 > num1 && num2 > num3)
	{
		cout << num2 << " is the biggest value" << endl;
	}
	else if (num3 > num1 && num3 > num2)
	{
		cout << num3 << " is the biggest value" << endl;
		
	}
	else
	{
		cout << "Numbers are not distinct" << endl;
	}

	return 0;
}

[nisor]

#include <iostream>
using namespace std;

int main()
{
int num1 = 0;
int num2 = 0;
int num3 = 0;

cout << "Please enter 3 numbers leaving a space between each: ";
cin >> num1 >> num2 >> num3;

if (num1 > num2 && num1 > num3)
{
cout << num1 << " is the biggest value." << endl;
}
else if (num2 > num1 && num2 > num3)
{
cout << num2 << " is the biggest value" << endl;
}
else if (num3 > num1 && num3 > num2)
{
cout << num3 << " is the biggest value" << endl;

}
else
{
cout << "Numbers are not distinct" << endl;
}

if (num1 < num2 && num1 < num3)
{
cout << num1 << " is the smallest value." << endl;
}
else if (num2 < num1 && num2 < num3)
{
cout << num2 << " is the smallest value" << endl;
}
else if (num3 < num1 && num3 < num2)
{
cout << num3 << " is the smallest value" << endl;

}


return 0;
}

[Coyo]

Thank you nisor
i thought about this but was trying to think of a way with less code involved
but this has helped me a lot, i should probably just do what i think and not try to ake things complicated for myself.
thanks

[fantomasAlbania]

What about creating a function :

int max(int x, int y, int z) {
        if(x>y  && x>z) return x;
        else if(y>x && y>z) return y;
        else return z;
}

int main() {
        int num1,num2,num3;
        cout << "Please enter 3 numbers leaving a space between each: ";
	cin >> num1 >> num2 >> num3;

        int maximum = max(num1,num2,num3);
        cout << maximum << endl
}

We supose that input numbers are integers, else in function max should be double type of variables.
You will understand better with function.
Best Regards.

[Chervil]

The C++11 implementation of function std::max(),
as well as the usual std::max(num1, num2)
allows an initialiser list as a parameter.

#include <algorithm> 

    int biggest = std::max({num1, num2, num3});

this can handle any number of items.
http://www.cplusplus.com/reference/algorithm/max/

There is also the related std::max_element which could be used with a range of values in an array for example.
http://www.cplusplus.com/reference/algorithm/max_element/

[bird1234]

just change greater sign with less than

#include <iostream>
using namespace std;

int main()
{
	int num1 = 0;
	int num2 = 0;
	int num3 = 0;

	cout << "Please enter 3 numbers leaving a space between each: ";
	cin >> num1 >> num2 >> num3;

	if (num1 > num2 && num1 > num3) 
	{
		cout << num1 << " is the biggest value." << endl;
	}
	else if (num2 > num1 && num2 > num3)
	{
		cout << num2 << " is the biggest value" << endl;
	}
	else if (num3 > num1 && num3 > num2)
	{
		cout << num3 << " is the biggest value" << endl;
		
	}
	else
	{
		cout << "Numbers are not distinct" << endl;
	}
	
	if (num1 < num2 && num1 < num3)  // just change greater sign with less than 
	{
		cout << num1 << " is the smallest value." << endl;
	}
	else if (num2 < num1 && num2 < num3)
	{
		cout << num2 << " is the smallest value" << endl;
	}
	else if (num3 < num1 && num3 < num2)
	{
		cout << num3 << " is the smallest value" << endl;
		
	}
	else
	{
		cout << "Numbers are not distinct" << endl;
	}
	
	

	return 0;
}

[bird1234]

without using and operator

#include <iostream>
using namespace std;

int main()
{
	int num1 = 0;
	int num2 = 0;
	int num3 = 0;

	cout << "Please enter 3 numbers leaving a space between each: ";
	cin >> num1 >> num2 >> num3;
	// greater number
	if(num1>num2)
	{
		if(num1>num3)
		{
			cout<<num1<<" is the greatest number"<<endl;
		}
		else
		{
			cout<<num3<<" is the greatest number"<<endl;
		}
	}
	
	else if(num2>num3)
	{
		cout<<num2<<" is the greatest number"<<endl;
	}
	else
	{
		cout<<num3<<" is the greatest number"<<endl;
	}
	
	
	// smallest number
	
	
	
	if(num1<num2)
	{
		if(num1<num3)
		{
			cout<<num1<<" is the smallest number"<<endl;
		}
		else
		{
			cout<<num3<<" is the smallest number"<<endl;
		}
	}
	
	else if(num2<num3)
	{
		cout<<num2<<" is the smallest number"<<endl;
	}
	else
	{
		cout<<num3<<" is the smallest number"<<endl;
	}
	
	
	
	
	

	return 0;
}

[Coyo]

Thanks for all the help guys, problem solved.
really appreciate the replys