C Programming - Declarations and Initializations - Discussion

Discussion Forum : Declarations and Initializations - General Questions (Q.No. 1)
1.
Which of the following statements should be used to obtain a remainder after dividing 3.14 by 2.1 ?
rem = 3.14 % 2.1;
rem = modf(3.14, 2.1);
rem = fmod(3.14, 2.1);
Remainder cannot be obtain in floating point division.
Answer: Option
Explanation:

fmod(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 3.14/2.1 is %lf\n", fmod (3.14,2.1) );
  return 0;
}

Output:
fmod of 3.14/2.1 is 1.040000

Discussion:
141 comments Page 1 of 15.

Shubhangi said:   2 years ago
@All.

The % modulus operator gives a remainder of only int and not applicable for float.
(26)

Ayesha said:   2 years ago
Option D is right because the floating point is not applicable for %.
(10)

Dipak said:   5 years ago
@All.

We can't apply % sign on float.
(7)

Renu said:   6 years ago
I don't understand this answer please explain me simply.
(5)

Bibhas Kumar sahu said:   6 years ago
I don't understand this answer please explain me simply.
(4)

Krishna said:   6 years ago
Why option C is more relevant?
(3)

Peter Omondi said:   5 years ago
Well understood. Thanks all for explaining.
(3)

Swathy said:   1 decade ago
Yes. For int only we can use mod for float we should use fmod the answer should be c only for this problem.
(1)

Renuka said:   1 decade ago
Yes fmod is the correct ans as in for floating division.
(1)

Silambu said:   7 years ago
No @Keerthi.

The floating point remainder cannot be obtained by modulo operator.
(1)


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