DXC Placement Code Snippets Output Based Questions with answers

1. What will be the output of following code :

int main()
{
  int a = NULL – true;
  printf(“%d”,a);
  return 0;
}

A. -1
B. Garbage value
C. 0
D. Error

Ans. -1

2. What will be the output of following code :

main()
{

  extern int iExtern;
  iExtern = 20;
  printf(%d,iExtern);

}

A. 2
B. 20
C. Error
D. Warning

Ans. C

3. What will be the output of following code :

int x = 0;

int main()
{

 if(x == x) 
  printf(“if”);
 else
  printf(“else”);
 return 0;

}

A. Two same variables can not be compared
B. ifelse
C. else
D. if

Ans D

4. What will be the output of following code :

#define FALSE -1

#define NULL 0

#define TRUE 1

int main()
{
 if(NULL)
  printf(“NULL”);
 else if(FALSE)
  printf(“TRUE”);
 else
  printf(“FALSE”);
 return 0;
}

A. TRUE
B. FALSE
C. NULL
D. Error

Ans. A

5. What will be the output of following code :

int main()
{

 int i;
 if(true)
  printf(“work”);
 else
  printf(“not work”);
 return 0;

}

A. work
B. not work
C. compiler error
D. runtime error

Ans. A

6. What will be the output of following code :

int main()
{
 if(printf(“0”))
  printf(“inside if block”);
 else
  printf(“inside else block”);
 return 0;

}

A. inside else block
B. 0
C. 0inside if block
D. Error – If can not have print statement

Ans. C

7. What will be the output of following code :

#define clrscr() 100;
 
main()
{

 clrscr();
 printf(%d\n\t, clrscr());

}

A. 100
B. 10
C. Compile Error
D. Runtime Error

Ans. A

8. What will be the output of following code :

int main()
{
 void vpointer;

 char cHar = g,cHarpointer = GOOGLE;

 int j = 40;

 vpointer = &cHar;

 printf(“%c”,(char)vpointer);

 vpointer = &j;

 printf(“%d”,(int )vpointer);

 vpointer = cHarpointer;

 printf(“%s”,(char)vpointer +3);

}

A. 40
B. 100
C. ERROR
D. Warning

Ans. C

9. What will be the output of following code :

int main()
{

 int i = 5, j = 4;

 if(!printf(“”))
  printf(“%d %d”, i, j);
 else
  printf(“%d %d”, i++, ++j);
 return 0;

}

A. 5 5
B. 5 4
C. 5 6
D. 6 6

Ans. B

10. What will be the output of following code :

main()
{

 int i = 10, j =20;
 j = i ,j?(i,j)?i :j:j;
 printf(“%d %d”,i,j);

}

A. 20 20
B. 10 10
C. 10 20
D. 10 10

Ans. D