Floating Point Issues

Q1: Which of the following statement obtains the remainder on dividing 5.5 by 1.3 ?

A rem = (5.5 % 1.3)

B rem = modf(5.5, 1.3)

C rem = fmod(5.5, 1.3)

D rem = fmod(5.5, 1.3)

Q2: The binary equivalent of 5.375 is

A 101.101110111

B 101.011

C 101011

D None of above

Q3: What are the different types of real data type in C ?

A float, double

B short int, double, long int

C float, double, long double

D double, long int, float

Q4:
What will you do to treat the constant 3.14 as a long double?

A use 3.14LD

B use 3.14L

C use 3.14DL

D use 3.14LF

Q5:
Which of the following range is a valid long double (Turbo C in 16 bit DOS OS) ?

A 3.4E-4932 to 1.1E+4932

B 3.4E-4932 to 3.4E+4932

C 1.1E-4932 to 1.1E+4932

D 1.7E-4932 to 1.7E+4932

Q6:
If the binary eauivalent of 5.375 in normalised form is 0100 0000 1010 1100 0000 0000 0000 0000, what will be the output of the program (on intel machine)?
#include<stdio.h>
#include<math.h>
int main()
{
    float a=5.375;
    char *p;
    int i;
    p = (char*)&a;
    for(i=0; i<=3; i++)
        printf("%02x\n", (unsigned char)p[i]);
    return 0;
}

A 40 AC 00 00

B 04 CA 00 00

C 00 00 AC 40

D 00 00 CA 04

Q7:
What will you do to treat the constant 3.14 as a float?

A use float(3.14f)

B use 3.14f

C use f(3.14)

D use (f)(3.14)

Q8: Which statement will you add in the following program to work it correctly?
#include<stdio.h>
int main()
{
    printf('%f\n', log(36.0));
    return 0;
}

A #include<conio.h>

B #include<math.h>

C #include<stdlib.h>

D #include<dos.h>

Q9:
We want to round off x, a float, to an int value, The correct way to do is

A y = (int)(x + 0.5)

B y = int(x + 0.5)

C y = (int)x + 0.5

D y = (int)((int)x + 0.5)

Q10:
A float occupies 4 bytes. If the hexadecimal equivalent of these 4 bytes are A, B, C and D, then when this float is stored in memory in which of the following order do these bytes gets stored?

A ABCD

B DCBA

C 0xABCD

D Depends on big endian or little endian architecture


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