程序代码：

#include <stdio.h>
int main (void) {
        int x,y,z,max;
        printf ("Please three digit:\n");
        scanf ("%i%i%i",&x,&y,&z);
        printf ("Max digit is:%i\n",(x>y?(x>z?x:z):(y>z?y:z)));
        return 0;
}