Which one of the following operators is a unary operator in c language? ans. & sizeof() << &&

Identifying the Unary Operator in C Language

1. Understanding Unary Operators: Unary operators are operators that operate on a single operand. Their main purpose is to perform various operations, such as calculation, manipulation, or evaluation, using just one variable.

2. Reviewing the Options:

   • &: This is the address-of operator, which returns the memory address of its operand. It is a unary operator.
   • sizeof(): This operator returns the size of a data type or variable in bytes. It is also considered a unary operator, but it is more of a type operator in terms of syntax.
   • <<: This is the left shift operator, which requires two operands. It is not a unary operator.
   • &&: This is the logical AND operator, which requires two boolean expressions. Therefore, it is not a unary operator.

3. Conclusion: Both & and sizeof() can be considered unary operators; however, since the question identifies a unary operator explicitly, & is the most straightforward example.

Final Answer

The unary operator in C language from the provided options is &.