Comma can be used as an operator, as a separator, as a place of semicolon
Comma in C and C++
In C and C++, comma (, ) can be used in two contexts:
1. Comma as an operator:
The comma operator (represented by the token, ) is a binary operator that evaluates its first operand and discards the result, it then evaluates the second operand and returns this value (and type). The comma operator has the lowest precedence of any C operator, and acts
2. 2) Comma as a separator:
Comma acts as a separator when used with function calls and definitions, function like macros, variable declarations, enum declarations, and similar constructs.
3. 3) Comma operator in place of a semicolon.
We know that in C and C++, every statement is terminated with a semicolon but comma operator also used to terminate the statement after satisfying the following rules.
The variable declaration statements must be terminated with semicolon.
The statements after declaration statement can be terminated by comma operator.
The last statement of the program must be terminated by semicolon.
C Programming & Data Structures: Comma Operator in C Topics discussed:
1. What is the Comma Operator?
2. Use of Comma Operator as the separator.
3. Use of Comma Operator as an operator.
4. Precedence of Comma Operator.
5. Examples based on Comma Operator.
6. Homework on Comma Operator.
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