Data Types Easy Questions and Answers

Which of three sizes of floating point types should be used when extended precision is required?

Correct Option: D

Float for single precision, double for double precision and long double for extended precision.

What is the output of this program?

#include 
    using namespace std;
    int main()
    {
        float n1 = 10.1;
        double n2 = 10.1;
        if (n1 == n2)
           cout << "Interview";
        else
           cout << "Mania";
        return 0;
    }

Correct Option: B

Float store floating point numbers with 8 place accuracy and requires 4 bytes of Memory. Double has 16 place accuracy having the size of 8 bytes.

What is the output of this program?

#include 
#include 
using namespace std;
    int main()
    {
        cout << setprecision(17);
        double n = 0.2;
        cout << n << endl;
        return 0;
    }

Correct Option: A

The double had to truncate the approximation to its limited memory, which resulted in a number that is not exactly 0.2.

What is the output of the following program?

#include 
using namespace std;
    int main()
    {
        float n = 143.0f;
        cout << n << endl;
        return 0;
    }

Correct Option: D

The value 143 is printed because of its precision.

Which is used to indicate single precision value?

Correct Option: B

F or f

Data Types

Data Types

C++ Programming

Correct Option: D

Correct Option: B

Correct Option: A

Correct Option: D

Correct Option: B