1
GATE CSE 2007
MCQ (Single Correct Answer)
+2
-0.6
The following postfix expression with single digit operands is evaluated using a stack:
8 2 3 ^ / 2 3 * + 5 1 * -
Note that ^ is the exponentiation operator. The top two elements of the stack after the first * is evaluated are:
2
GATE CSE 2007
MCQ (Single Correct Answer)
+2
-0.6
Consider the following C program:
#include
#define EOF -1
void push (int); /* push the argument on the stack */
int pop (void); /* pop the top of the stack */
void flagError ();
int main () {
int c, m, n, r;
while ((c = getchar ()) != EOF) {
if (isdigit (c) )
push (c);
else if ((c == '+') || (c == '*')) {
m = pop ();
n = pop ();
r = (c == '+') ? n + m : n*m;
push (r);
} else if (c != ' ')
flagError ();
}
printf("% c", pop ());
}
What is the output of the program for the following input ?
5 2 * 3 3 2 + * + 3
GATE CSE 2007
MCQ (Single Correct Answer)
+1
-0.3
The maximum number of binary trees that can be formed with three unlabeled nodes is:
4
GATE CSE 2007
MCQ (Single Correct Answer)
+1
-0.3
The height of a binary tree is the maximum number of edges in any root to leaf path. The maximum number of nodes in a binary tree of height h is:
Paper analysis
Total Questions
Algorithms
12
Compiler Design
5
Computer Networks
10
Computer Organization
5
Data Structures
13
Database Management System
11
Digital Logic
5
Discrete Mathematics
20
Operating Systems
9
Programming Languages
1
Theory of Computation
7
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