【随笔】关于算法竞赛中使用文件输入输出和文件名的规定等问题

 1 #define LOCAL
 2 #include<stdio.h>
 3 #define INF 1000000000
 4 int main(){
 5 #ifdef LOCAL
 6   freopen("cross.in", "r", stdin);
 7   freopen("cross.out", "w", stdout);
 8 #endif
 9   int x, n = 0, min = INF, max = -INF, s = 0;
10   while(scanf("%d", &x) == 1) {
11     s += x;
12     if(x < min) min = x;
13     if(x > max) max = x;
14 /*
15     printf("x = %d, min = %d, max = %d\n", x, min, max);
16 */
17     n++;
18   }
19   printf("%d %d %.3lf\n", min, max, (double)s/n);
20   return 0;
21 }

 1 #include<stdio.h>
 2 #define INF 1000000000
 3 int main(){
 4   FILE *fin, *fout;
 5   fin = fopen("cross.in", "rb");
 6   fout = fopen("cross.out", "wb");
 7   int x, n = 0, min = INF, max = -INF, s = 0;
 8   while(fscanf(fin, "%d", &x) == 1) {
 9     s += x;
10     if(x < min) min = x;
11     if(x > max) max = x;
12     n++;
13   }
14   fprintf(fout, "%d %d %.3lf\n", min, max, (double)s/n);
15   fclose(fin);
16   fclose(fout);
17   return 0;
18 }