C程序习题-使用宏找出三个数中最大的数[9.8]

#include <stdio.h>

#define MAX2NUMBER(a,b) (a) > (b) ? (a) : (b)
#define MAX3NUMBER(a,b,c) MAX2NUMBER(a,b) > (c) ? MAX2NUMBER(a,b) : (c)

int main(int argc, char *argv[])
{
    int a,b,c;
    printf("please input a,b,c number:");
    scanf("%d,%d,%d",&a,&b,&c);
    
    printf("the max number is : %d ",MAX3NUMBER(a,b,c));
    
    system("pause");
    return 0;
}