6. In C++, what is the sign of character data type by default?

1. 1. Unsigned

   
   
   

   2. Implementation dependent

   
   
   

   3. Signed

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   The standard does not specify if plain char is signed or unsigned. There are three distinct character types according to the standard: char, signed char and unsigned char.

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7. What will be the output of this program?
   

   #include
   using namespace std;
       int main()
       {
           char ch = 65;
           cout<< ch;
           return 0;
       }
   

1. 1. 0

   
   
   

   2. 65

   
   
   

   3. A

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   The literal value for 65 is A. So it will be printing A.

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8. Select the right option.
   Given the variables a, b are of char type and c, d, e are of int type
   i. e = (c * d) / (c + d);
   ii. e = (a * b) / (c + d);

1. 1. i is false and ii is true

   
   
   

   2. i is true but ii is false

   
   
   

   3. both i and ii are false

   
   
   

   4. both i and ii are true

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   Every character constant has an integer value. Also char belongs to the integral type hence arithmetic and logical operations can be performed on them.

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9. Which of the following belongs to the set of character types?

1. 1. only a

   
   
   

   2. char

   
   
   

   3. wchar_t

   
   
   

   4. both wchar_t and char

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   wchar_t and char is used to represent wide character and character.

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10. What is the output of the following program?
    

    #include
    using namespace std;
        int main()
        {
            int a = -10;
            unsigned int b = 20;
            
            if(a > b)
            {
                cout << "a is greater";
            }
            else
            {
                cout << "b is greater";
            }
            return 0;
        }
    

1. 1. 10

   
   
   

   2. 20

   
   
   

   3. a is greater

   
   
   

   4. b is greater

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   a is promoted to unsigned int on comparison. On conversion a has all bits set, making it the bigger one.

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