76. Size of C++ objects are expressed in terms of multiples of the size of a ____ and the size of a char is _______

1. 1. char, 4

   
   
   

   2. float, 8

   
   
   

   3. int, 1

   
   
   

   4. char, 1

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   char, 1

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77. Identify the incorrect option.

1. 1. sizeof(char) <= sizeof(long) <=sizeof(wchar_t)

   
   
   

   2. 1 <= sizeof(bool) <= sizeof(long)

   
   
   

   3. sizeof(N) = sizeof(signed N) = sizeof(unsigned N)

   
   
   

   4. sizeof(float) <= sizeof(double) <= sizeof(long double)

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   sizeof(char) <= sizeof(wchar_t) <= sizeof(long).

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78. What is the output of the following program?
    

    #include 
    using namespace std;
        int main()
        {
            int n = 0x10 + 030 + 50;
            cout << sizeof(n)<<'\n';
            return 0;
        }
    

1. 1. 0x10 + 030 + 50

   
   
   

   2. 030 + 50

   
   
   

   3. 0x10 + 030

   
   
   

   4. Depends on compiler

   
   
   

   5. Garbage

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   The sum of three numbers are belongs to different number systems, so the result is type casted into integer.

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79. What is the output of the following program?
    

    #include 
    using namespace std;
        int main()
        {
            int p = 10;
            float q;
            cout << sizeof(++p + q);
            cout << " "<        return 0;
        }
    

1. 1. 10 2

   
   
   

   2. 10 4

   
   
   

   3. 2 10

   
   
   

   4. 10 0

   
   
   

   5. 4 10

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: E

   The a as a integer will be converted to float while calculating the size. The value of any variable doesn’t modify inside sizeof operator. Hence value of variable a will remain 10.

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80. What would be the output of the following program (in 32-bit systems)?
    

    #include 
    using namespace std;
        int main()
        {
            cout << sizeof(char);
            cout << " "<< sizeof(int);
            cout << " "<< sizeof(float);
            return 0;
        }
    

1. 1. 1 4 4

   
   
   

   2. 4 4 1

   
   
   

   3. 4 1 4

   
   
   

   4. Garbage value

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   Character is 1 byte, integer 4 bytes and float 4 bytes.

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