【编程实践】数据统计器

//version 1
#define INF 1000000000
#include<stdio.h>
int main()
{
errno_t err;
//err = fopen_s(&stream, "crt_fopen_s.c", "r")
FILE*fin, *fout;
err = fopen_s(&fin,"data.in", "rb");
err = fopen_s(&fout,"data.out", "wb");
int x, n = 0, min = INF, max = -INF, s = 0;
while (fscanf_s(fin,"%d", &x) == 1)
{
s += x;
if (x < min) min = x;
if (x>max) max = x;
n++;
}
printf("%d %d %.3f\n", min, max, (double)s / n);
fprintf(fout,"%d %d %.3f\n", min, max, (double)s / n);
fclose(fin);
fclose(fout);
return 0;
}