程序代码：

#include <stdio.h>
#define MAX(blog) blog blog##max(blog a, blog b)    \
{                                                   \
    return a>b?a:b;                                 \
}
#define flo(n) n##at
int main()
{
    MAX(float);
    printf("%lf", floatmax((flo(flo))10, (flo(flo))20));
    return 0;
}

程序代码：

#include <stdio.h>
#define MAX(blog) blog blog##max(blog a, blog b)    \
{                                                   \
    return a>b?a:b;                                 \
}
int main()
{
    #define flo(n) n##at
    MAX(float);
    printf("%lf", floatmax((flo(flo))10, (flo(flo))20));
    return 0;
}