#include <stdio.h>
main()
{
	double x, max=-1e30, min=1e30, avg=0;
	unsigned int i=0;
	int j=1;
	printf("Please input a list of real numbers ended by any non-number symbol:\n");
	while(j==1){
		j=scanf("%lf", &x);
		if(j==1){
			if(x>max) max=x;
			if(x<min) min=x;
			avg=(i*avg+x)/++i;
		}
	}
	printf("Max=%lf, Min=%lf, Avg=%lf\n", max, min, avg);
}