What does O mean in c language

In C language, "O" means: 1. Zero in octal number; 2. The third expression in the triple conditional operator; 3. Parentheses.

#What does O mean in C language?

In C language, "O" means:

1. Zero in octal number

• The octal number is Base 8 number system.
• In octal numbers, "0" represents the number 0.

2. The third expression in the triple conditional operator

• The triple conditional operator is a short if-else statement , as shown below:

<code class="c">(condition) ? true_expression : false_expression;</code>

• If the condition is true, the value of true_expression is calculated and returned.
• If the condition is false, the value of false_expression is calculated and returned.
• The third expression (indicated by "O") is optional and is similar to true_expression when the condition is true.

3. Parentheses

• In some cases, "O" can represent parentheses. For example:

<code class="c">printf("Hello, world!\n");</code>

• The "O" here represents the left bracket in the parameter list of the printf function.

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