Questions and answers for exam Preparation

MCQs

Total Questions : 63 | Page 5 of 7 pages

Question 41.

How many times the program will print "Placementadda" ?

#include<stdio.h>
int main()
{
printf("Placementadda");
main();
return 0;
}

Infinite times
32767 times
65535 times
Till stack overflows

Discuss Question

Answer: Option D. -> Till stack overflows

A call stack or function stack is used for several related purposes, but the main

reason for having one is to keep track of the point to which each active subroutine

should return control when it finishes executing.

A stack overflow occurs when too much memory is used on the call stack.

Here function main() is called repeatedly and its return address is stored in the stack.

After stack memory is full. It shows stack overflow error.

Question 42.

What is the notation for following functions?

1. int f(int a, float b)
{
/* Some code */
}
2. int f(a, b)
int a; float b;
{
/* Some code */
}

1. KR Notation 2. ANSI Notation
1. Pre ANSI C Notation 2. KR Notation
1. ANSI Notation 2. KR Notation
1. ANSI Notation 2. Pre ANSI Notation

Discuss Question

Answer: Option C. -> 1. ANSI Notation 2. KR Notation

KR Notation means Kernighan and Ritche Notation.

Question 43.

What will be output if you compile following c code ?

#include<stdio.h>
int add(a,b)
{
int c=a+b;
return c;
}
void main()
{
int a=10,b=20;
printf("%d",add(a,b));
}

Compile Error
30
0
None of these

Discuss Question

Answer: Option B. -> 30

Question 44.

What will be output if you compile following c code ?

#include<stdio.h>
static int funct(int val;)
{
static int sum;
sum+=val;
return sum;
}
void main()
{
int i,n=9;
for(i=1;i

20
0
30
None of these

Discuss Question

Answer: Option A. -> 20

Question 45.

The keyword used to transfer control from a function back to the calling function is

switch
goto
go back
return

Discuss Question

Answer: Option D. -> return

The keyword return is used to transfer control from a function back to the calling function.
Example:

#include<stdio.h>
int add(int, int); /* Function prototype */
int main()
{
int a = 4, b = 3, c;
c = add(a, b);
printf("c = %d\n", c);
return 0;
}
int add(int a, int b)
{
/* returns the value and control back to main() function */
return (a+b);
}

Output:
c = 7

Question 46.

What will be output if you compile following c code ?

#include<stdio.h>
void main()
{
int add(int,int);
int a=7,b=13;
printf("%d",add(add(a,b),add(a,b)));
}
int add(a,b)
int a,b;
{
return (a+b);
}

Compile Error
20
40
None of these

Discuss Question

Answer: Option C. -> 40

Question 47.

What will be output if you compile following c code ?

#include<stdio.h>
char funct(int val)
{
char ch=val;
return ch;
}
void main()
{
float a=256.25;
printf("%d",funct(a));
}

0
256
256.25
None of these

Discuss Question

Answer: Option A. -> 0

Question 48.

What will be output if you compile following c code ?

#include<stdio.h>
int funct2(int b)
{
if(b==0)
return b;
else
funct1(b--);
}
int funct1(int a)
{
if(a==0)
return a;
else
funct2(a--);
}
void main()
{
int a=7;
printf("%d",funct1(a));
}