Which of the following is the correct syntax for prefix decrement of a variable x by 1 in C?

easy📝 Syntax Q12 of 15

C - Operators and Expressions

Which of the following is the correct syntax for prefix decrement of a variable x by 1 in C?

Ax--;

Bx-+;

Cx+-;

D--x;

Step-by-Step Solution

Solution:

Step 1: Identify prefix decrement syntax
The prefix decrement operator is --x;, which decrements x by 1.
Step 2: Check options carefully
A is postfix x--;, B x-+; and C x+-; invalid syntax, D is correct prefix.
Final Answer:
--x; -> Option D
Quick Check:
Prefix decrement --x; is correct syntax [OK]

Quick Trick: Look for correct -- syntax before or after variable [OK]

Common Mistakes:

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