Given the following syntax directed translation rules :

Rule 1 : $R \rightarrow A B\{B . i=R . i-1 ; A . i=B . i R . i=A . i+1 ;\}$

Rule 2 : $P \rightarrow C D\{P . i=C . i+D . i ; D . i=C . i+2\}$

Rule 3 : $Q \rightarrow E F\{Q . i=E . i+F . i ;\}$

Which ONE is the CORRECT option among the following?

Consider the following ANSI C program:

int main() {

Integer x;

return 0;

}

Which one of the following phases in a seven-phase C compiler will throw an error?  

x = u - t;
y = x * v;
x = y + w;
y = t - z;
y = x * y;