11. The size_t integer type in C++ is?

1. 1. Unsigned integer of at least 16 bits

   
   
   

   2. Signed integer of at least 64 bits

   
   
   

   3. Signed integer of at least 16 bits

   
   
   

   4. Unsigned integer of at least 64 bits

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   The size_t type is used to represent the size of an object. Hence, it’s always unsigned. According to the language specification, it is at least 16 bits.

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12. What will be output of this function?
    

    #include 
        using namespace std;
        int main()
        {
            register int p = 15;
            int *ptr = &p;
            cout << *ptr;
    	    return 0;
        }
    

1. 1. Compilation Error

   
   
   

   2. Runtime Error

   
   
   

   3. 15

   
   
   

   4. 10

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   Using & on a register variable may be invalid, since the compiler may store the variable in a register, and finding the address of it is illegal.

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13. What will be the output of this program?
    

    #include 
        using namespace std;
        int main()
        {
            int P = 20;
            cout << "Given integer 'P' with 'true' :" << P && true;
            return 0;
        }
    

1. 1. Given integer 'P' with 'true' :20

   
   
   

   2. Given integer 'P' with 'true' :0

   
   
   

   3. Given integer 'P' with 'true' :2

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   Given integer 'P' with 'true' :20

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14. What will be output of this program?
    

    #include 
        using namespace std;
        int main()
        {
            int num = 5;
            int num0 = num / -10;
            int num1 = num % -10;
            cout << num0 << " "<< num1;
            return 0;
        }
    

1. 1. Compilation Error

   
   
   

   2. Runtime Error

   
   
   

   3. 0 5

   
   
   

   4. 5 0

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   Sign of result of mod operation on negative numbers is sign of the dividend.

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15. 0545, 451245123245, ‘p’ and 0X3f are _____ _____ ____ and _____ literals respectively.

1. 1. hexadecimal, octal, decimal, character

   
   
   

   2. octal, decimal, character, hexadecimal

   
   
   

   3. octal, hexadecimal, character, decimal

   
   
   

   4. decimal, character,octal, hexadecimal

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   Literal integer constants that begin with 0x or 0X are interpreted as hexadecimal and the ones that begin with 0 as octal. The character literal are written within ”.

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