Question #10
Code:
int a=10,b;
b=a++ + ++a;
printf("%d,%d,%d,%d",b,a++,a,++a);
Hmm, this is undefined- suprised nobody caught this

Question 97

Code:
int m = -14; 
int n = 6; 
int o; 
o = m % ++n; 
n += m++ - o; 
m <<= (o ^ n) & 3;
If one of the operands is negative, the sign of the result is machine dependent...