Question

1. Select the answer that declares a variable named c that is a C character, initialized to the value A.

char *c = 'A';

char c = 'A';

char c = "A";

char *c = "A";

2. Fill in the missing code to produce the desired output:

int a = 0;
int b = 1;
int c;
// Missing code goes here
printf("%d", c);

Desired output:

1

-c = a && b;

-c = a || b;

-Answer not given

-c = a || !b;

3. What is the output of the following code segment:

int a = 1;
  int b = 2;
  int c = a + b;
  printf("%d", c);

-2

-3

-0

-1

4. You need to use printf() and scanf(). What line of code should you include in your code?

#include <stdio.h>

include stdio.h

#include "stdio.h"

import <stdio.h>

5. Select the C language built-in floating-point data types.

float, double

char, short, int, long

hex, float, double

float

6. What is the output of the following code:

int a = 1;
  int b = 2;
  if (a < b) {
    printf("A");
    if (b < a) {
      printf("B");
    } else {
      printf("C");
    }
  }

-ABC

-A

-AB

-AC

7. Fill in the missing code to produce the desired output:

for (/*Missing code goes here*/) {
    printf("%d ", i);
  }

Desired output:

0 1 2

-int i = 1; i < 3; i++

-int i = 1; I <= 3; i++

-int i = 0; i < 3; i++

-Answer not listed

8. Suppose the following code tries to open a file that is not present. How do you handle the error condition?

FILE *f = fopen("exam.ext", "w");
if (/*Missing code goes here*/) {
  //Handle error condition here...
}

-f == nil

-f == NULL

-f != NULL

-f != void

Answer 1

Rate my Solution and comment if any doubts

1:
   ->    option 2 is correct answer i.e.., char c = 'A'; because it is character varaiable named c which is
       initialized to character 'A'.
   ->   option 1 is not correct because it is a character pointer
   -> option 3 is not correct because "A" represents a string
   ->   option 4 is not correct because it is a character pointer that points to a string

2:
   ->   option 2 ( 1 ) is correct answer i.e.., 0 || 1 = 1 (False OR True = True)
   ->   option 1 is not correct answer because (False AND True = False)
   ->   option 4 is not correct answer because (False OR Not True ) is (False OR False = False )
   ->   option 3 is not correct as answer is given
3:
   ->   option 2 which is 3 correct as 1 + 2 = 3
   ->    option 1 is not correct as 1 + 2 != 2
   ->    option 3 is not correct as 1 + 2 != 0
   ->    option 4 is not correct as 1 + 2 != 1

4:
   ->    option 1 ( #include <stdio.h>) is correct answer because it is predefined header file .
       option 3 (#include "stdio.h") is also correct but it uses userdefined header file.
   ->    option 2 and 4 are not correct as it is not correct syntax

5:
   ->   option 1 is correct because both float , double are predefined datatypes for float
   ->   Remaining options are not correct as they do not contain both float and double

6:
   ->   option 4 i.e.., AC is corrrect because as a < b (1 < 2) is True so 'A' is printed is first and then
       b < a (2 < 1) is False So it goes to else So 'C' is printed
   ->    option 1 is not correct as ABC cannot be printed at once
   ->   option 2 is not correct as A only cannot be printed
   ->   option 3 is not correct as AB cannot be printed as a<b and b<a cannot be at the same time
7:
   ->   option 3 i.e.., (int i=0 ; i < 3 ; i++) is correct because
       first i=0 .. 0<3 and 0 will be printed and i is incremented by 1then
       i=1 .. 1<3 and 1 will be printed and i is incremented by 1 then
       i=2 .. 2<3 and 2 will be printed and i is incremented by 1 then
       i=3 .. 3<3 is false so loop will break
   ->   option 1 is not correct as it gives output 1,2
   ->   option 2 is not correct as    as 'I' is not declared

8:
   ->   option 2 (f==NULL) is generally correct as f return NULL if there is no file
   but if you opened a file in write mode which is not exist then it automatically create that file
   ->   option 1 is not correct as nil is notdefined
   ->   option 3 is not correct as if file exist then it goes to if
   ->   option 4 is not correct as void is the return type for the function