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?  

In the context of compilers, which of the following is/are NOT an intermediate representation of the source program?

Consider the following augmented grammar with {#, @, <, >, a, b, c} as the set of terminals.

S' → S

S → S # cS

S → SS

S → S @

S → < S >

S → a

S → b

S → c

Let I0 = CLOSURE({S' → ∙ S}). The number of items in the set GOTO(GOTO(I0, <), <) is _______

Consider the following ANSI C code segment:

z = x + 3 + y -> f1 + y -> f2;

for (i = 0; i < 200; i = i + 2){

if (z > i) {

P = p + x + 3;

q = q + y -> f2;

} else {

p = p + y -> f2;

q = q + x + 3;

}

}

Assume that the variable y points to a struct (allocated on the heap) containing two fields f1 and f2, and the local variables x, y, z, p, g, and i are allotted registers. Common sub-expression elimination (CSE) optimization is applied on the code. The number of addition and dereference operations (of the form y -> f1 or y -> f2 ) in the optimized code, respectively, are: