1
GATE CSE 2015 Set 1
Numerical
+2
-0
The least number of temporary variables required to create a three-address code in static single assignment form for the expression $$q + r / 3 + s - t * 5 + u * v/w$$ is _______________.
Your input ____
2
GATE CSE 2014 Set 2
MCQ (Single Correct Answer)
+2
-0.6
For a C program accessing X[ i ] [ j ] [ k ], the following intermediate code is generated by a compiler. Assume that the size of an integer is 32 bits and the size of a character is 8 bits.
t0 = i * 1024 
t1 = j * 32 
t2 = k * 4 
t3 = t1 + t0 
t4 = t3 + t2 
t5 = X[t4] 
Which one of the following statements about the source code for the C program is CORRECT?
A
X is declared as "int X[32] [32] [8]"
B
X is declared as "int X[4] [1024] [32]"
C
X is declared as "char X[4] [32] [8]"
D
X is declared as "char X[32] [16] [2]"
3
GATE CSE 2006
MCQ (Single Correct Answer)
+2
-0.6

Consider the following translation scheme.

$$\eqalign{ & S \to ER \cr & R \to *E\left\{ {pr{\mathop{\rm int}} ('*');} \right\}R\,|\,\varepsilon \cr & E \to F + E\left\{ {pr{\mathop{\rm int}} (' + ');} \right\}\,|\,F \cr & F \to S\,|\,id\,\left\{ {pr{\mathop{\rm int}} (id.value);} \right\} \cr} $$

Here id is a token that represents an integer and id.value represents the corresponding integer value. For an input '2 * 3 + 4' this translation scheme prints

A
2 * 3 + 4
B
2 * + 3 4
C
2 3 * 4 +
D
2 3 4 + *
4
GATE CSE 2006
MCQ (Single Correct Answer)
+2
-0.6
Consider the following C code segment.
for (i = 0; i < n; i++) 
  { 
      for (j=0; j < n; j++) 
      { 
          if (i%2) 
          { 
           x += (4*j + 5*i); 
           y += (7 + 4*j); 
          } 
       } 
  } 
Which one of the following is false?
A
The code contains loop invariant computation
B
There is scope of common sub-expression elimination in this code
C
There is scope of strength reduction in this code
D
There is scope of dead code elimination in this code
GATE CSE Subjects
Software Engineering
Web Technologies
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
CBSE
Class 12