Do not use the assignment operator in the contexts listed in the following table because doing so typically indicates programmer error and can result in unexpected behavior.
| Operator | Context |
|---|---|
if | Controlling expression |
while | Controlling expression |
do ... while | Controlling expression |
for | Second operand |
?: | First operand |
?: | Second or third operands, where the ternary expression is used in any of these contexts |
&& | Either operand |
|| | either operand |
, | Second operand, when the comma expression is used in any of these contexts |
...