1
GATE CSE 2001
MCQ (Single Correct Answer)
+2
-0.6
Consider the following program
Program P2
      var n:int;
      procedure W(var x:int)
      begin
          x=x+1;
          print x;
      end

      procedure D
      begin
          var n:int;
          n=3;
          W(n);
      end
begin     \\begin P2
      n = 10;
      D;
end
If the language has dynamic scooping and parameters are passed by reference, what will be printed by the program?
A
10
B
11
C
3
D
None of the above
2
GATE CSE 2001
MCQ (Single Correct Answer)
+2
-0.6
Consider the following three C functions:
[P1] int*g(void)
     {
       int x=10;
       return(&x);
     }
[P2] int*g(void)
      {
        int *px;
       *px = 10;
        return px;
      }
[P3] int*g(void)
     {
       int *px
       px =(int*)malloc (size of (int));
       *px = 10;
       return px;
     }
Which of the above three functions are likely to cause problems with pointers?
A
Only P3
B
Only P1 and P3
C
Only P1 and P2
D
P1, P2 and P3
3
GATE CSE 2001
Subjective
+5
-0
Consider the following C program:
void abc(char *s)
{
   if(s[0]=='\0') return;
   abc(s+1);
   abc(s+1);
   printf("%c",s[0]);
}
main()
{ 
   abc("123");
}
(a) What will be the output of the program?
(b) If abc(s) is called with a null-terminated string s of length n characters (not counting the null ('\0') character), how many characters will be printed by abc(s)?
4
GATE CSE 2001
MCQ (Single Correct Answer)
+1
-0.3
Consider the following two statements;
$${S_1}\,\,:\,\,\left\{ {{0^{2n}}\left| {n \ge 1} \right.} \right\}$$ is a regular language
$${S_2}\,\,:\,\,\left\{ {{0^m}{1^n}{0^{m + n}}\left| {m \ge 1} \right.\,\,and\,\,n \ge \left. 1 \right\}} \right.$$ is a regular language

Which of the following statements is correct?

A
Only $${S_1}$$ is correct
B
Only $${S_2}$$ is correct
C
Both $${S_1}$$ and $${S_2}$$ are correct
D
None of $${S_1}$$ and $${S_2}$$ is correct
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