#include <stdio.h>main (){ double a,b,c,m;printf ("请分别输入abc:\n");scanf ("%a%b%c",&a,&b,&c);if (a>=b&&a>=c) m=a;else if (b>=c&&b>=a) m=b;else m=c;printf ("%f,%f,%f中最大的数是%m",a,b,c,m);