Question

What is an expression ? WRITE the priority and associativity of different arthimetic operators in C evaluate 2+4*5/2-2/4+2%5​

Answer 1

Answer:

What is an expression ? WRITE the priority and associativity of different arthimetic operators in C evaluate 2+4*5/2-2/4+2%5

Answer 2

Answer:

• An expression is essentially a sequence or ordering of operators and operands.
• On evaluating the given expression, 13.5 is the answer.

Explanation:

Expressions can be infix, postfix or prefix.

The priority and associativity of different operators in C are as follows:

1. Parenthesis/Brackets: Left -> Right
2. Increment/ Decrement: Right -> Left
3. Unary: Right -> Left
4. Arithmetic: Left -> Right
5. Relational:  Left -> Right
6. Logical:  Left -> Right
7. Ternary: Right -> Left
8. Assignment:  Right -> Left
9. Comma:  Left -> Right

The expression 2+4*5/2-2/4+2%5​ will be evaluated as:

• (((2+((4*5)/2))-(2/4))+(2%5))​
• ((2+(20/2))-0.5)+212-0.5+2

Hence, 13.5 is the answer.