I got stuck in some coding.

[Rakesh o_O]

#include<stdio.h>
void main()
{
int x, y, z;
x=y=z=1;
z = (++x || ++y && ++z);  //statement 1
printf("x = %d\ty = %d\tz = %d",x,y,z);
}

need help in understanding why y comes 1 instead of 2 according to me from statement 1.

[Rakesh o_O]

My teacher told me that it's answer is hidding in OR truth table, but i can't find any source to find its answer.

[laserlight]

You might have misheard your teacher: rather, the answer lies in the fact that && has a higher precedence than || and that for || and &&, once the left operand's value is found to be sufficient to determine the value of the expression, the right operand is not evaluated (i.e., a "short circuit" behaviour).