UVA 10194 - Football (aka Soccer)

        这道题读懂题意后还是很简单的，除了中间要注意gets()函数的用法。gets()函数可接收空格符，并且以回车结束后会吸收掉结束的换行符。但是scanf()函数以空格和换行作为输入的结束符，且不会吸收结束符。所以gets()前如果有scanf()函数，一定得加getchar()函数吸收掉sanf()函数的结束符。

        这道题提交了15次才通过，很让人纠结。注意：1、规则最后一条字典顺序不分大小写；2、两队的进球数是小于20，如果你用字符串直接接收每场比赛的结果，然后再进行处理要特别注意了；3、输出文件最后不能有换行。

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct Team {
    char name[50];
    int b, c, d, e, f, g, h, i;
}team[50];

int n, t, g;

int find(char str[]) {
    for (int i=0; i<t; i++)
        if (0 == strcmp(team[i].name, str))
            return i;
    return 0;
}

// 将字符串大写转小写
void UTL(char str[]) {
    int len = strlen(str);

    for (int i=0; i<len; i++)
        if (str[i]>='A' && str[i] <= 'Z') {
            str[i] += ('a'-'A');
        }
}

int cmp(const void *_a, const void *_b) {
    struct Team *a = (struct Team*)_a;
    struct Team *b = (struct Team*)_b;

    if (a->b != b->b)
        return b->b - a->b;
    if (a->d != b->d)
        return b->d - a->d;
    if (a->g != b->g)
        return b->g - a->g;
    if (a->h != b->h)
        return b->h - a->h;
    if (a->c != b->c)
        return a->c - b->c;

    char ta[50], tb[50];
    strcpy(ta, a->name);
    strcpy(tb, b->name);
    UTL(ta);
    UTL(tb);
    return strcmp(ta, tb);
}

int main() {

    char tName[105];
    scanf("%d", &n);
    getchar();
    while (n--) {

        gets(tName);            // gets()函数会把最后的回车吸收掉scanf却不会
        memset(team, 0, sizeof (team));

        scanf("%d", &t);
        getchar();
        for (int i=0; i<t; i++)
            gets(team[i].name);

        scanf("%d", &g);

        getchar();
        while (g--) {
            char ch, a[50], b[50];
            int x = 0, w, l;

            while (ch = getchar()) {
                if ('#' == ch)
                    break;
                a[x] = ch;
                x++;
            }
            a[x] = '\0';
            scanf("%d", &w);    // 一定要注意分数是小于20
            getchar();
            scanf("%d", &l);
            getchar();
            gets(b);

            // 找到队名的编号
            int aa, bb;
            aa = find(a);
            bb = find(b);

            team[aa].c += 1;
            team[bb].c += 1;

            team[aa].h += w;
            team[bb].h += l;
            team[aa].i += l;
            team[bb].i += w;

            team[aa].g = team[aa].h - team[aa].i;
            team[bb].g = team[bb].h - team[bb].i;

            if (w > l) {
                team[aa].b += 3;
                team[aa].d += 1;
                team[bb].f += 1;
            }
            else if (w == l) {
                team[aa].b += 1;
                team[bb].b += 1;
                team[aa].e += 1;
                team[bb].e += 1;
            }
            else {
                team[bb].b += 3;
                team[bb].d += 1;
                team[aa].f += 1;
            }
        }

        qsort(team, t, sizeof (team[0]), cmp);

        printf("%s\n", tName);
        for (int i=0; i<t; i++) {
            printf("%d) %s %dp, %dg (%d-%d-%d), %dgd (%d-%d)\n",
                i+1, team[i].name, team[i].b, team[i].c, team[i].d,
                team[i].e, team[i].f, team[i].g, team[i].h, team[i].i);
        }
        if (n > 0)                  // 还要注意最后不能有空行
            printf("\n");
    }
    return 0;
}