How to use +- in c++

[Richard Stark]

Well I am recently learning c++ and I am a total noob at it and that's why I need ur help guys .......

 

I was designing a program to let computer select an random number and user guess it .....depending upon the difference between the actual number and guessed number the computer replies "too far " or " close "or " very close " .......let the actual number be 'x' and guessed number be 'y'.....so now when you enter y ,I used the equation

 

 

' if(y-x>=30) {

Cout<<"very far"<<endl;

 

}

'

 

And likewise the rest of it but the real problem is it only works if y>x and if x>y then it messes things up ......

(You know what I mean to say ) 

 

 

So I created two parts to deal with it (one if x>y and y<x)......

.so now everything runs smooth until you get to a point where first you type a number that is y>x then it gives the valid response @s long as it is y>x .....but when I choose a number x>y .....the switching messes up everything......

 

 

Can somebody find a solution to this ......

 

I just know the basics of programming ............Also is there something like |x>y|>=30 (like you learned in school:it gives me error when I use it )

 

 

Thank you guys ......

[Enderman]

3 minutes ago, Richard Stark said:

 

(one if x>y and y<x)

this is the exact same thing

 

you switched the sign around but also switched the variables

 

so basically you have

x>y and

x>y

 

if you want to have two different things you need to switch ONLY the > OR the variables

so x>y, x<y

 

or

x>y, y>x

 

[Geert]

Make the number absolute (via abs) and then compare.

[Telebubbies]

2 minutes ago, Enderman said:

this is the exact same thing

 

you switched the sign around but also switched the variables

 

so basically you have

x>y and

x>y

 

if you want to have two different things you need to switch ONLY the > OR the variables

so x>y, x<y

 

or

x>y, y>x

 

I am more of a Java guy, but I do know a little about C++ (actually less than little). But this does seem to make more sense to be honest. 

[Glenwing]

5 minutes ago, Richard Stark said:

Well I am recently learning c++ and I am a total noob at it and that's why I need ur help guys .......

 

I was designing a program to let computer select an random number and user guess it .....depending upon the difference between the actual number and guessed number the computer replies "too far " or " close "or " very close " .......let the actual number be 'x' and guessed number be 'y'.....so now when you enter y ,I used the equation

 

 

' if(y-x>=30) {

Cout<<"very far"<<endl;

 

}

'

 

And likewise the rest of it but the real problem is it only works if y>x and if x>y then it messes things up ......

(You know what I mean to say ) 

 

 

So I created two parts to deal with it (one if x>y and y<x)......

.so now everything runs smooth until you get to a point where first you type a number that is y>x then it gives the valid response @s long as it is y>x .....but when I choose a number x>y .....the switching messes up everything......

 

 

Can somebody find a solution to this ......

 

I just know the basics of programming ............Also is there something like |x>y|>=30 (like you learned in school:it gives me error when I use it )

 

 

Thank you guys ......

abs(y-x)

will give you the absolute value.

[Zeinone]

why not add 'abs' ?

[Richard Stark]

2 minutes ago, Zeinone said:

why not add 'abs' ?

What does abs mean ?? And how do I use it ........(I am newbie here guys )

[Richard Stark]

3 minutes ago, Glenwing said:

abs(y-x)

will give you the absolute value.

Abs ...how I use it ?

[Richard Stark]

I just want to make x-y = y-x......

[Zeinone]

abs means absolute, like in math ....example: abs(-3) = 3, so your difference will always be going to the 1st 'if' loop

[Zeinone]

2 minutes ago, Richard Stark said:

Abs ...how I use it ?

 

if(abs(y-x)>=30) {
	std::cout<<"very far"<<endl;
}

 

[Richard Stark]

OK guys ...thank you very much for helping me....

I am gonna use abs() just like you said ^^^^.....

You guys are a great community .......

[Nineshadow]

The absolute value, or modulus, is defined as :

[Richard Stark]

10 minutes ago, Nineshadow said:

The absolute value, or modulus, is defined as :

Yep that's what school taught me and thats what I wanted to know ........[SOLVED]