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这段代码哪里有问题,为什么不能实现排序
- //对信息按要求排序
- int SortByScore(const void* a, const void* b)
- {
- Player* playerA = (Player*)a;
- Player* playerB = (Player*)b;
- return playerA -> score - playerB -> score;
- }
-
-
- int SortByRank(const void* a, const void* b)
- {
- const Player* playerA = (const Player*)a;
- const Player* playerB = (const Player*)b;
- if(strcmp(playerA -> identity, "职业") == 0 && strcmp(playerB -> identity, "职业") == 0)
- {
- int Comp = strcmp(playerB -> rank, playerA -> rank);
- if(Comp == 0)
- {
- return strcmp(playerA -> id, playerB -> id);
- }
- return Comp;
- }
- return strcmp(playerA -> identity, "职业") == 0 ? -1 : 1;
- }
-
-
-
- void SortPlayer(Player players[], int num_players)
- {
- int i = 0;
- char sort_choice;
- printf("A. 所有棋手按等级分进行降序排序\n");
- printf("B. 职业棋手按段位进行降序排序\n");
- printf("C. 退出当前功能\n");
- printf("请选择(A-C):");
- scanf("%c", &sort_choice);
- switch(sort_choice)
- {
- case 'A':
- qsort(players, num_players, sizeof(Player), SortByScore);
- break;
- case 'B':
- qsort(players, num_players, sizeof(Player), SortByRank);
- break;
- case 'C':
- return;
- }
- getchar();
- printf("排序结果:\n");
- printf("%20s\t%20s\t%10s\t%12s\t%20s\n", "编号","姓名","身份","段位","等级分\n");
- for(i = 0; i < num_players; i++)
- {
- printf("%20s\t%21s\t%10s\t%12s\t%18s\n", players[i].id, players[i].name, players[i].identity, players[i].rank, players[i].score);
- }
- }
-
复制代码 |
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