Prefix: the value is incremented/decremented first and then applied.
Postfix: the value is applied and the value is incremented/decremented.
#include
main( )
{
int i = 3,j = 4,k;
k = i++ + --j;
printf("i = %d, j = %d, k = %d",i,j,k);
}
i = 4, j = 3, k = 6