# Math_Captcha
## Example
## Features
- [x] 用 rust 编写的数学验证码生成库
## Install
```bash
cargo add math_captcha
```
## Usage
```rust
use math_captcha::Captcha;
fn main() {
let a = Captcha::new(150, 50); // width: 150, height: 50
println!("value:{},base64_img:{}", a.value, a.base64_img);
}
```