关于#c语言#的问题：求平均值的程序


```c
#include
#include

char* title = "示例程序";

double Average(double a,double b) {
    return (a + b) / 2;
}


int WINAPT WinMain(HINSTANCE h, HINSTANCE d, LPSTR S, int m) {
    double ave;
    chae buff[80];
    ave = average(123, 456);
    sprintf (buff,"平均值 = %f",ave);
    MessageBox(NULL, buff, title, MB_OK);
    return 0;
}

```

没看出有什么问题