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- Question
Which of the following statement obtains the remainder on dividing 5.5 by 1.3?
Options- A. rem = (5.5 % 1.3)
- B. rem = modf(5.5, 1.3)
- C. rem = fmod(5.5, 1.3)
- D. Error: we can't divide
- Correct Answer
- rem = fmod(5.5, 1.3)
Explanationfmod(x,y) - Calculates x modulo y, the remainder of x/y.
This function is the same as the modulus operator. But fmod() performs floating point divisions.Example:
#include <stdio.h> #include <math.h> int main () { printf ("fmod of 5.5 by 1.3 is %lf\n", fmod (5.5, 1.3) ); return 0; }Output:
fmod of 5.5 by 1.3 is 0.300000
Floating Point Issues problems
Search Results
- 1. We want to round off x, a float, to an int value, The correct way to do is
Options- 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) Discuss
Correct Answer: y = (int)(x + 0.5)
Explanation:
Rounding off a value means replacing it by a nearest value that is approximately equal or smaller or greater to the given number.y = (int)(x + 0.5); here x is any float value. To roundoff, we have to typecast the value of x by using (int)
Example:
#include <stdio.h> int main () { float x = 3.6; int y = (int)(x + 0.5); printf ("Result = %d\n", y ); return 0; }Output:
Result = 4.- 2. The binary equivalent of 5.375 is
Options- A. 101.101110111
- B. 101.011
- C. 101011
- D. None of above Discuss
Correct Answer: 101.011
- 3. What will you do to treat the constant 3.14 as a float?
Options- A. use float(3.14f)
- B. use 3.14f
- C. use f(3.14)
- D. use (f)(3.14) Discuss
Correct Answer: use 3.14f
Explanation:
Given 3.14 is a double constant.
To specify 3.14 as float, we have to add f to the 3.14. (i.e 3.14f)
- 4. What will you do to treat the constant 3.14 as a long double?
Options- A. use 3.14LD
- B. use 3.14L
- C. use 3.14DL
- D. use 3.14LF Discuss
Correct Answer: use 3.14L
Explanation:
Given 3.14 is a double constant.To specify 3.14 as long double, we have to add L to the 3.14. (i.e 3.14L)
- 5. 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; }
Options- A. 40 AC 00 00
- B. 04 CA 00 00
- C. 00 00 AC 40
- D. 00 00 CA 04 Discuss
Correct Answer: 00 00 AC 40
- 6. Which of the following range is a valid long double (Turbo C in 16 bit DOS OS)?
Options- 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 Discuss
Correct Answer: 3.4E-4932 to 1.1E+4932
Explanation:
The range of long double is 3.4E-4932 to 1.1E+4932- 7. 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?
Options- A. ABCD
- B. DCBA
- C. 0xABCD
- D. Depends on big endian or little endian architecture Discuss
Correct Answer: Depends on big endian or little endian architecture
- 8. 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; }
Options- A. #include<conio.h>
- B. #include<math.h>
- C. #include<stdlib.h>
- D. #include<dos.h> Discuss
Correct Answer: #include<math.h>
Explanation:
math.h is a header file in the standard library of C programming language designed for basic mathematical operations.Declaration syntax: double log(double);
- 9. What are the different types of real data type in C?
Options- A. float, double
- B. short int, double, long int
- C. float, double, long double
- D. double, long int, float Discuss
Correct Answer: float, double, long double
Explanation:
The floating point data types are called real data types. Hence float, double, and long double are real data types.- 10. What do the following declaration signify?
char *arr[10];
Options- A. arr is a array of 10 character pointers.
- B. arr is a array of function pointer.
- C. arr is a array of characters.
- D. arr is a pointer to array of characters. Discuss
Correct Answer: arr is a array of 10 character pointers.
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