plz give an answer,,urgent

[ashish srmu]

//output problm..

#include <stdio.h>
#include <conio.h>

int main()
{
int i=1,l=-2,k=11,j=0,m=1;
if((i++ && l--) || (k-- && j--) && (m++))
{
printf("i=%d l=%d k=%d j=%d m=%d",i,l,k,j,m);
}



getch();
}




// the above code give the output as:
i=2 l=-3 k=11 j=0 m=1



can anyone explain...how this output comes..reply fast! plz..

[ResidentBiscuit]

Because that was the state of your variables by the time your program went to print them out?

[ashish srmu]

hey..thats what im asking here..how?... why has i and l changed..but not k j and m..?? all conditions are true..so all variables should.. change their values...

[Ganado]

It's due to short circuit logic in the if statements. If you have [x OR y], and x is true, then it doesn't matter what the y is because the output will be true either way, so it doesn't bother evaluating it.
http://en.wikipedia.org/wiki/Short-circuit_evaluation

Likewise, if you have [x AND y], and x is false, it will not bother evaluating y.

I assume this is just an academic exercise, but please don't do something complicated like this in real code as it makes it really hard to follow.