C/C++ Compare Smallest and Largest 3-Digit Numbers using Logical Operators

[ineedhelpnow]

num is a 3-digit positive integer, such as 100, 989, or 523, but not 55, 1000, or -4.

For most direct readability, your expression should compare directly with the smallest and largest 3-digit number.

if ( (num >= 100)<STUDENT CODE> ) { 
  ...
}

so far i came up with

((num >= 100) && (?))

but i don't know how to write something that represents a 3 digit positive number?

Edit: nevermind. i figured it out to be && (num <= 999)

 

[I like Serena]

Oh.
Good call!

Actually, I thought that:

((num >= 100) && (num != 55) && (num != 1000) && (num != -4))

would also work to satisfy the criteria.

 

[ineedhelpnow]

by doing so you only eliminate those the three numbers though, right? while in fact what needs to be eliminated is any number that's not 3 digits and not positive.

 

[I like Serena]

by doing so you only eliminate those the three numbers though, right? while in fact what needs to be eliminated is any number that's not 3 digits and not positive.

You're right!
I completely missed that condition.