a=100 >90 >80 ;

Question

What is value of a

Answer 1

In the right hand of the assignment operator is a relational expression. That means the whole expression is gets evaluated to either 1 (true) or 0 (false). The order of evaluation is from Left-to-Right ¹. So, in an explicit manner, it would've been written as the following form:

a = (100 > 90) > 80;

Then, since 100 is greater than 90, it's going to get evaluated to 1 (true)

a = (1) > 80;

Finally, since 1 is not grater than 80, it's going to get evaluated to 0 (false)

a = 0;

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¹ https://en.cppreference.com/w/c/language/operator_precedence

Answer 2

what's the data-type of "a"? if it's an integer, the value is 0.