C/C++ Solving C++ Logical Ops 2: Print "Special Number

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The discussion focuses on creating a C++ expression to print "Special number" for specific values of `specialNum` (-99, 0, or 44). A common mistake highlighted is using the assignment operator `=` instead of the equality operator `==`, which leads to incorrect behavior in the condition check. The correct expression should be `(specialNum == -99) || (specialNum == 0) || (specialNum == 44)`. Participants emphasize the importance of distinguishing between these operators to avoid logical errors in code. Overall, attention to detail in syntax is crucial for correct program functionality.
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Write an expression that prints "Special number" if specialNum is -99, 0, or 44.

Sample program:

Code:
#include <iostream>
using namespace std;

int main() {
   int specialNum = 0;

   specialNum = 17;
   
   if (<STUDENT CODE>) {
      cout << "Special number" << endl;
   }
   else {
      cout << "Not special number" << endl;
   }

   return 0;
}

i thought it would be
Code:
(specialNum == -99) || (specialNum == 0) || (specialNum = 44)
but its not
 
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ineedhelpnow said:
Write an expression that prints "Special number" if specialNum is -99, 0, or 44.

Sample program:

Code:
#include <iostream>
using namespace std;

int main() {
   int specialNum = 0;

   specialNum = 17;
   
   if (<STUDENT CODE>) {
      cout << "Special number" << endl;
   }
   else {
      cout << "Not special number" << endl;
   }

   return 0;
}

i thought it would be
Code:
(specialNum == -99) || (specialNum == 0) || (specialNum = 44)
but its not

That last condition is an assignment. You want specialNum == 44, because "specialNum = 44" is a statement that means "assign 44 to specialNum, and return that value". Thus it logically becomes true (as 44 is not zero) and you always get "special number" (and if you printed specialNum it would mysteriously always be 44.

Be careful between = and == :)
 
i literally read over that piece of code i wrote like ten times and i didnt even notice that i missed a '='. thanks bacterius!
 
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