C Objective Questions And Answers Page 8 of 10

Question: 141

What is important difference between structure & union?

(A) There is no difference
(B) Union takes less memory
(C) Union is faster
(D) Structure is faster

Compiler
Expert structure
[Posted by: Admin | Chicago, USA]

Question: 142

Is it necessary that all elements of structure should be different in size?

(A) Yes
(B) No

Compiler
Practitioner structure
[Posted by: Admin | Chicago, USA]

Question: 143

Can we use access specifiers(private, public, protected) with structures?

(A) Yes
(B) No

Compiler
Practitioner structure
[Posted by: Admin | Chicago, USA]

Question: 144

Is it mandatory that the size of all elements in a union should be same?

(A) Yes
(B) No

Compiler
Practitioner union
[Posted by: Admin | Chicago, USA]

Question: 145

Are self referential structures are possible in C?

(A) Yes
(B) No

Compiler
Beginner structure
[Posted by: Admin | Chicago, USA]

Question: 146

#include <stdio.h>

int main()
{
struct xyz{
int a;
};

struct xyz obj1={1};
struct xyz obj2 = obj1;
printf("%d", obj2.a);
obj2.a = 100;
printf("%d", obj1.a);
return 0;
}

(A) 1100
(B) 11
(C) 0100
(D) 10

Compiler
Practitioner structure
[Posted by: Admin | Chicago, USA]

Question: 147

Can we compare two structures using any built in operator?

(A) Yes
(B) No

Compiler
Expert structure
[Posted by: Admin | Chicago, USA]

Question: 148

Which predefined function is used to write whole structure into a file ?

(A) write()
(B) fwrite()
(C) swrite()
(D) None of the above

Compiler
Expert structure
[Posted by: Admin | Chicago, USA]

Question: 149

How to minimize the padding issues with structure?

(A) Order members from largest to smallest
(B) Order memebers from smallest to largest
(C) By using only char data type
(D) By using referencial pointer

Compiler
Expert operators
[Posted by: Admin | Chicago, USA]

Question: 150

The output of Assembler in process of compilation is

(A) Assembly Code
(B) Object Code
(C) Executable
(D) .i file

Compiler
Practitioner assembler
[Posted by: Admin | Chicago, USA]

Question: 151

The input to the Assembler in the compilation process is

(A) Assembly Code
(B) .i file produced by Preprocessor
(C) Object Code
(D) Source Code

Compiler
Expert assembler
[Posted by: Admin | Chicago, USA]

Question: 152

What does .txt section contains?

(A) Executable Instructions
(B) Un-initialized Global Variables
(C) Un-initialized Static Variables
(D) Initialized Static & Global Variables

Compiler
Expert compilation
[Posted by: Admin | Chicago, USA]

Question: 153

What will be the output of following code?
#include<stdio.h>

int main()
{
int a=4*4+2;
printf("%d",--a);
return 0;
}

(A) 17
(B) 23
(C) 24
(D) 18

Compiler
Beginner loops
[Posted by: vikas | india]

Question: 154

#include <stdio.h>

void decrement();

int main()
{
decrement();
decrement();
decrement();
return 0;
}

void decrement()
{
 static int i = 5;
 printf("%d",i);
 i--;
}

(A) 555
(B) 543
(C) 545
(D) 544

Compiler
Practitioner function
[Posted by: Admin | Chicago, USA]

Question: 155

Find the output of below code. Is it a++ or ++b in statement a+++b.

#include <stdio.h>

int main()
{
    int a=5, b=2;
    printf("%d", a+++b);

    return 0;
}

(A) Compilation Error
(B) 8
(C) 7
(D) 0

Compiler
Expert operators
[Posted by: Admin | Chicago, USA]

Question: 156

#include <stdio.h>

int main()
{
printf("%d",printf("HELLO"));

return 0;

}

(A) Compilation Error
(B) Hello
(C) 5Hello
(D) Hello5

Compiler
Practitioner function
[Posted by: Bellemar | Philippines]

Question: 157

Find the output if n is 6

#include <stdio.h>

int main()
{
  int sum=0, i, j,n;
  n=6;
  
  for(i=1; i<=n; i++){      
      for(j=1; j<=n; j++){
          sum += (i+j);
      }
  }

printf("%d", sum);

return 0;
}

(A) 150
(B) 168
(C) 195
(D) 252

Compiler
Beginner loops
[Posted by: Admin | Chicago, USA]

Question: 158

int main()
{
  int a = 1;
  short int  b = 2;
  float c = 3;
  if(sizeof((a == 2) ? c : b) == sizeof(float))
  {
     printf("float");
  }
  else   if(sizeof((a == 2) ? c : b) == sizeof(short int))
  {
     printf("short int");
  }
return 0;                                                                                                             
}

(A) float
(B) short int
(C) nothing
(D) compilation error

Compiler
Expert operators
[Posted by: Varun Kumar Reddy | Bangalore]

Question: 159

#include "stdio.h"
main()
{
int a[] = {10,20,30};
printf("%d",*a+1);
}

(A) 10
(B) 20
(C) 11
(D) 21

Compiler
Beginner loops
[Posted by: anjali | Bangalore, India]

Question: 160

#include <stdio.h>
int main(void)
{
    char str1[] = "Hello. How are you?";
    char str2[21];
    int pos;

    for(pos=0; pos<21; pos++);
   {
      str2[pos] = str1[pos];
   }
   
   printf("str1: %s, str2: %s", str1, str2);
   return 0;
}

(A) str1: Hello. How are you?, str2: Hello. How are you?
(B) str1: Hello. How are you?, str2: Hello. How are you?nullnull
(C) str1: Hello. How are you?, str2: Hello. How are you?garbagevalue
(D) str1: Hello. How are you?, str2: garbagevalue

Compiler
Expert arrays
[Posted by: Admin | Chicago, USA]

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