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Expressions - Programming

Q1:

What will be the output of the program? 
#include<stdio.h>
int main()
{
    int x=4, y, z;
    y = --x;
    z = x--;
    printf('%d, %d, %d\n', x, y, z);
    return 0;
}

A 4, 3, 3

B 4, 3, 2

C 3, 3, 2

D 2, 3, 3

ANS:A - 4, 3, 3

Step 1: int x=4, y, z; here variable x, y, z are declared as an integer type and variable x is initialized to 4.
Step 2: y = --x; becomes y = 3; because (--x) is pre-decrement operator.
Step 3: z = x--; becomes z = 3;. In the next step variable x becomes 2, because (x--) is post-decrement operator.
Step 4: printf('%d, %d, %d\n', x, y, z); Hence it prints '2, 3, 3'.