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| Code Block | 
|---|
|  | 
| if (param == 1)
   openWindow();
 else if (param == 2)
   closeWindow();
 else if (param == 1) /* Duplicated condition */
   moveWindowToTheBackground();
 | 
Note that duplicating a condition violates this guideline only if the duplicate conditions always behave similarly...see a compliant solution below for a condition that is textually a duplicate but behaves differently.
Compliant Solution (if/else if)
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| Code Block | 
|---|
|  | 
| if (param == 1)
   openWindow();
 else if (param == 2)
   closeWindow();
 else if (param == 3)
   moveWindowToTheBackground();
 | 
Compliant Solution (Conditional Side-Effects)
This code does not violate this recommendation, because even though the conditions are textually identical, they have different side effects, because the getc()  function advances the stream marker.
| Code Block | 
|---|
|  | 
| if (getc() == ':')
   readMoreInput();
 else if (getc() == ':')
   readMoreInput();
 else if (getc() == ':')
   readMoreInput();
 | 
Noncompliant Code Example (logical operators)
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