C Programming Questions and Answers – Float Datatype

C Programming Questions and Answers – Float Datatype

1.The number of digits present after decimal in float is________.

a)1

b)3

c)6

d)16

2.Which among the following is never possible as an output for float?

a)3.666666

b)3.666

c)3

d)None of the mentioned

3.In a 32-bit compiler, which 2 types have same size?

a)char and short

b)short and int

c)int and float

d)float and double

4.What is the size of float in a 32-bit compiler?

a)1

b)2

c)4

d)8

5.Loss in precision occurs for typecasting from____________.

a)char to short

b)float to double

c)long to float

d)float to int

6.For union

union temp

{

char a;

int b;

float c;

};

The size is decided by:

a)char

b)int

c)float

d)Both (b) and (c)

7.%f access specifier is used for

a)Strings

b)Integral types

c)Floating type

d)All of the mentioned

8.Select the odd one out with respect to type?

a)char

b)int

c)long

d)float

9.What is the output of this C code?

#include <stdio.h>

printf(“%.0f”, 2.89);

a)2.890000

b)2.89

c)2

d)3

10.What is the output of this C code?

#include <stdio.h>

int main()

{

float a = 2.455555555555;

printf(“%f”, a);

}

a)2.455555

b)2.455556

c)2.456

d)2.46

11.Which of the following % operation is invalid?

a)2 % 4;

b)2 % 4l;

c)2 % 4f;

d)Both (b) and (c)

12.Which data type is suitable for storing a number like?

10.0000000001

a)int

b)float

c)double

d)Both (b) and (c)

13.Modulus for float could be achieved by?

a)a % b

b)modulus(a, b);

c)fmod(a, b);

d)mod(a, b);

14.Predict the data type of the following mathematical operation?

2 * 9 + 3 / 2 . 0

a)int

b)long

c)float

d)double

15.%lf is used to display

a)float

b)long float

c)double

d)All of the mentioned