C＃中的一元增量运算符i ++

Question

In my last interview i found this tricky question. after these two lines what will be the value of i.

int i=c;
//c is a constant
i=i++;

where c is a constant(where c is initialised before). please give me step by step answer rather than one word answer.

Answer 1

finally value of i remains same as c.

Explanation:- when i is assigned with i++ ;

step 1. first i++ return value c(but not assigned to left-hand operand i).

step 2. then i++ increments value of i to c+1.

step 3. i is assigned with value c that is returned in step1.

In effect value of i remains same but some where along the execution it was c+1, But finally it is assigned with value c.