How to Handle Modulus Operations with Doubles in C ?

Double Modulus Dilemma in C

In a C program, attempting to perform the modulus operation (%) between two doubles results in an error due to incompatible operand types.

Explanation

The modulus operator, %, is typically used with integers, where it returns the remainder after division. However, when applied to doubles, the % operator is invalid because doubles represent decimal values and do not inherently involve integer values.

Solution

To perform modulus operations on doubles, the appropriate function is fmod(), which is declared in the header file. fmod() returns the remainder of dividing the first argument by the second, even when the arguments are doubles.

Example

The following code snippet illustrates the usage of fmod() to calculate the modulus of two doubles:

#include <cmath>

int main() {
    double x = 6.3;
    double y = 2.0;
    double z = std::fmod(x, y);

    // z now contains the remainder of x divided by y
}

The above is the detailed content of How to Handle Modulus Operations with Doubles in C ?. For more information, please follow other related articles on the PHP Chinese website!