Output is 22 21 21 22 Because n printf evaluation starts from last param

WHAT WILL BE OUTPUT OF BELOW CODE . . AND PLEASE EXPLAIN HOW
IT COME ..

#include<stdio.h>
#include<conio.h>
void main()
{
int k=20;
printf("%d%d%d%d",k,k++,++k,k);
getch();
}

Question Posted / dasari prasad

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Answer Posted / dasari prasad

Output is 22 21 21 22

Because n printf evaluation starts from last parameter
because of STACK.. so calculate k value from last i.e k=20
and ++k=21 ,k++=21(post incre),k=22.

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