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原题:
问题在第16行代码中。
代码:
- #include <stdio.h>
- #include <stdlib.h>
- #include <time.h>
- void shuffle(int array[], int length);
- void deal(int array[], int player[3][14]);
- void show(char names[3][40], int player[3][14]);
- void shuffle(int array[], int length)
- {
- int index, temp, i;
-
- srand(time(NULL));
- for (i = 0; i < length; i++)
- {
- index = rand() % (length - i) + i; //这里为什么要(length - i) + i,不能直接length吗?
- if (index != i)
- {
- temp = array[i];
- array[i] = array[index];
- array[index] = temp;
- }
- }
- }
- void deal(int array[], int player[3][14])
- {
- int i, j, k = 0;
-
- for (i = 0; i < 14; i++)
- {
- for (j = 0; j < 3; j++)
- {
- player[j][i] = array[k++];
- }
- }
- }
- void show(char names[3][40], int player[3][14])
- {
- int i, j, poker;
-
- printf("\n方=方角,梅=梅花,红=红桃,黑=黑桃\n\n");
-
- for (i = 0; i < 3; i++)
- {
- printf("%s手上的牌是:", names[i]);
- for (j = 0; j < 14; j++)
- {
- poker = player[i][j];
-
- if (poker < 11 && 0 < poker)
- {
- printf("方%d ", poker);
- }
- else if (poker < 21 && 10 < poker)
- {
- printf("梅%d ", poker-10);
- }
- else if (poker < 31 && 20 < poker)
- {
- printf("红%d ", poker-21);
- }
- else if (poker < 41 && 30 < poker)
- {
- printf("黑%d ", poker-30);
- }
- else
- {
- switch (poker)
- {
- case 41: printf("方J "); break;
- case 42: printf("方Q "); break;
- case 43: printf("方K "); break;
- case 44: printf("梅J "); break;
- case 45: printf("梅Q "); break;
- case 46: printf("梅K "); break;
- case 47: printf("红J "); break;
- case 48: printf("红Q "); break;
- case 49: printf("红K "); break;
- case 50: printf("黑J "); break;
- case 51: printf("黑Q "); break;
- case 52: printf("黑K "); break;
- case 53: printf("小王 "); break;
- case 54: printf("大王 "); break;
- }
- }
- }
- printf("\n\n");
- }
- }
- int main(void)
- {
- int array[54];
- int player[3][14];
- int i, ch;
- char names[3][40];
-
- for (i = 0; i < 54; i++)
- {
- array[i] = i+1;
- }
-
- for (i = 0; i < 3; i++)
- {
- printf("\n请输入%d号玩家的名字:", i+1);
- scanf("%s", names[i]);
- }
-
- do
- {
- shuffle(array, 40);
- deal(array, player);
- show(names, player);
-
- printf("重新洗牌(Y/N)?");
- do
- {
- ch = getchar(); //过滤输入缓冲区的其他字符
- } while (ch != 'Y' && ch != 'N');
- } while (ch == 'Y');
-
- return 0;
- }
复制代码
不过也不排除你不知道c++随机数用法,rand()%10表示0到10之间的随机数。但你其实你只要感觉,这个加法运算的优先级也不可能高。
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