C Function Fmod

📅 2026-06-14 | 📂 C

## C Library function – fmod() `fmod()` The function returns the remainder of two floating-point numbers.。 ### Header file ```c #include

### Function Prototype

```c
double fmod(double x, double y);

### Parameter

| Parameter | Description |
|------|------|
| `x` | Floating-point Value |
| `y` | Floating-point Value |

### Return Value

Return `x` Divided By `y` the remainder of。

### Instance

The following example demonstrates how to use `fmod()` Function:

```c
#include 
#include int main()
{
    double x = 8.9, y = 3.5;
    printf("fmod(%.1f, %.1f) = %.1fn", x, y, fmod(x, y));
    return 0;
}

#### Runtime Result

fmod(8.9, 3.5) = 2.0

### Reference links

- [C Standard Library -](#)
- [Math.h Reference Manual](#)

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