Please give me explanation

Question

#include <stdio.h>
int main()
{
int x=0,y=1;
printf("%d",++x | | ++y);
printf("%d %d",x,y);
return 0;
}

Answer 1

No need for explaining.
There is no header with name studio.h

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If you mean <stdio.h> there then the output is fairly simple.

1) "x" is initialised with 0 and "y" with one

2) logical OR (||) is left associative, that means expression (++x) would be evaluated first, which increments the value of "x" to 1 and evaluates to be "true" so overall expression simply returns 1 ( without even evaluating (++y) as it would not affect the results )

3) now as the final value of both *x* and *y* is 1, which is then added to output buffer.

Resulting in output ( newline and comments added for clarity resons only )
1 // from first print stmt
1 1 // from second print stmt

Answer 2

Martin Taylor
The output is 1 1 1