Give the output on the screen of the following program

#include <stdio.h>
int main()
{
    int x = 3, y , z;
    x*= 2 + 1; printf("%d\n",x);
    x *= y = z = 3; printf("%d\n",x);
    x = y == z ; printf("%d\n",x);
    x == (y = z); printf("%d\n",x);

     return 0;
}

Difficulty level
This exercise is mostly suitable for students 
9
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1
1
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