C Quiz - 108

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Question 1

In the below statement, ptr1 and ptr2 are uninitialized pointers to int i.e. they are pointing to some random address that may or may not be valid address. C 
int* ptr1, ptr2;
  • TRUE
  • FALSE
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Question 2

Anyone of the followings can be used to declare a node for a singly linked list. If we use the first declaration, “struct node * nodePtr;” would be used to declare pointer to a node. If we use the second declaration, “NODEPTR nodePtr;” can be used to declare pointer to a node. C 
/* First declaration */ struct node { int data; struct node * nextPtr; };  /* Second declaration */ typedef struct node{ int data; NODEPTR nextPtr; } * NODEPTR;
  • TRUE
  • FALSE
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Question 3

Anyone of the following can be used to declare a node for a singly linked list and “NODEPTR nodePtr;” can be used to declare pointer to a node using any of the following C 
/* First declaration */ typedef struct node {  int data;  struct node *nextPtr; }* NODEPTR;  /* Second declaration */ struct node {  int data;  struct node * nextPtr; }; typedef struct node * NODEPTR;
  • TRUE
  • FALSE
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Question 4

Both of the following declarations for function pointers are equivalent. Second one (i.e. with typedef) looks cleaner. C 
/* First Declaration */ int (*funPtr1)(int), (*funPtr2)(int);  /* Second Declaration*/ typedef int (*funPtr)(int); funPtr funPtr1, funPtr2;
  • TRUE
  • FALSE
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Question 5

In a C file (say sourcefile1.c), an array is defined as follows. Here, we don’t need to mention array arr size explicitly in [] because the size would be determined by the number of elements used in the initialization. C 
int arr[] = {1,2,3,4,5};
In another C file (say sourcefile2.c), the same array is declared for usage as follows: C 
extern int arr[];
In sourcefile2.c, we can use sizeof() on arr to find out the actual size of arr.
  • TRUE
  • FALSE
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Question 6

Choose the correct option to fill the ?1 and ?2 so that the program prints an input string in reverse order. Assume that the input string is terminated by a new line character. 

#include <stdio.h>
void wrt_it (void);
int main (void)
{
    printf("Enter Text"); 
    printf ("\n");
    wrt_ it();
    printf ("\n");
    return 0;
}
void wrt_it (void)
{
    int c;
    if (?1)
        wrt_it();
    ?2
}

  • ?1 is  getchar() ! = '\n' ?2 is  getchar(c);

  • ?1 is  (c = getchar()); ! = '\n' ?2 is  getchar(c);

  • ?1 is  c! = '\n' ?2 is  putchar(c);

  • ?1 is (c = getchar()) ! = '\n' ?2 is putchar(c);

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C Quiz

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