金字招牌

1
int main(void)
2
{
3
  int m, n;
4
  int b[3][2] = { {1,2}, {3,4}, {5,6} };
5
  printf("数组b的首地址：%p\n", b);
6

7
  printf("第一次输出b中的元素：\n");
8
  for (m = 0; m < 3; m++)
9
  {
10
    for (n = 0; n < 2; n++)
11
    {
12
      printf("%d\t", b[m][n]);
13
    }
14
    printf("\n");
15
  }
16

17
  b[0][1] = 0;
18
  printf("第二次输出b中的元素：\n");
19
  for (m = 0; m < 3; m++)
20
  {
21
    for (n = 0; n < 2; n++)
22
    {
23
      printf("%d\t", b[m][n]);
24
    }
25
    printf("\n");
26
  }
27
  return 0;
28
}

1
#include<stdio.h>
2
#define N 4
3
#define M 5
4
int main()
5
{
6
  double a[N][M];
7
  int i, j;
8
  for (int i = 0;i < N - 1;i++)
9
  {
10
    for (int j = 0;j < M - 1;j++)
11
    {
12
      scanf("%lf", &a[i][j]);
13
    }
14
  }
15
  printf("原始成绩为：\n");
16
  for (int i = 0;i < N - 1;i++)
17
  {
18
    for (int j = 0;j < M - 1;j++)
19
    {
20
      printf("%.2lf   ", a[i][j]);
21
    }
22
    printf("\n");
23
  }
24
  printf("\n");
25
  double sum = 0.0, avg = 0.0;
26
  for (int i = 0;i < N - 1;i++)
27
  {
28
    sum = 0;
29
    for (int j = 0;j < M - 1;j++)
30
    {
31
      printf("%.2lf   ", a[i][j]);
32
      sum += a[i][j];
33
    }
34
    a[i][4] = sum;
35
    printf("%.2lf", sum);
36
    printf("\n");
37
  }
38
  printf("\n");
39
  for (i = 0;i < M;i++)
40
  {
41
    avg = 0;
42
    for (j = 0;j < N - 1;j++)
43
    {
44
      avg += a[j][i];
45
    }
46
    avg = avg / 3;
47
    a[N - 1][i] = avg;
48
  }
49
  a[N - 1][M - 1] = 0.00;
50
  for (int i = 0;i < N;i++)
51
  {
52
    for (int j = 0;j < M;j++)
53
    {
54
      printf("%.2lf   ", a[i][j]);
55
    }
56
    printf("\n");
57
  }
58

59
  return 0;
60
}

1
#include <stdio.h>
2
#include <stdlib.h>
3
#include <time.h>
4

5
#define ROW 3
6
#define COL 3
7
#define EMPTY ' '
8
#define PLAYER1 'X'
9
#define PLAYER2 'O'
10

11
char board[ROW][COL];
12

13
void initBoard();
14
void displayBoard();
15
int playerMove(int player, char symbol);
16
int checkWin();
17
int isDraw();
18

19
void initBoard()
20
{
21
  for (int i = 0; i < ROW; i++) {
22
    for (int j = 0; j < COL; j++) {
23
      board[i][j] = ' ';
24
    }
25
  }
26
}
27

28
void displayBoard() {
29
  printf("\n  ");
30
  for (int j = 0; j < COL; j++) {
31
    printf("  %d  ", j + 1);
32
  }
33
  printf("\n");
34
  for (int i = 0; i < ROW; i++) {
35
    printf("%d ", i + 1);
36
    for (int j = 0; j < COL; j++) {
37
      printf(" %c ", board[i][j]);
38
      if (j < COL - 1) printf("|");
39
    }
40
    printf("\n");
41
    if (i < ROW - 1) {
42
      printf("  ");
43
      for (int j = 0; j < COL; j++) {
44
        printf("---");
45
        if (j < COL - 1) printf("|");
46
      }
47
      printf("\n");
48
    }
49
  }
50
  printf("\n");
51
}
52

53
int playerMove(int player, char symbol) {
54
  int row, col;
55
  printf("玩家 %d [%c]，请输入落子坐标 (行 列)，例如：1 2: ", player, symbol);
56
  scanf("%d %d", &row, &col);
57
  row--; col--;
58

59
  if (row > ROW - 1 || row < 0 || col > COL - 1 || col < 0) {
60
    printf("坐标超出棋盘范围！\n");
61
    return 0;
62
  }
63
  if (board[row][col] != ' ') {
64
    printf("该位置已有棋子！\n");
65
    return 0;
66
  }
67
  board[row][col] = symbol;
68
  return 1;
69
}
70

71
int checkWin() {
72
  for (int i = 0; i < ROW; i++) {
73
    if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][0] != EMPTY) {
74
      return board[i][0];
75
    }
76
  }
77
  for (int j = 0; j < COL; j++) {
78
    if (board[0][j] == board[1][j] && board[1][j] == board[2][j] && board[0][j] != EMPTY) {
79
      return board[0][j];
80
    }
81
  }
82
  if (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[0][0] != EMPTY) {
83
    return board[0][0];
84
  }
85
  if (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[0][2] != EMPTY) {
86
    return board[0][2];
87
  }
88
  return ' ';
89
}
90

91
int isDraw() {
92
  for (int i = 0; i < ROW; i++) {
93
    for (int j = 0; j < COL; j++) {
94
      if (board[i][j] == ' ') {
95
        return 0;
96
      }
97
    }
98
  }
99
  return 1;
100
}
101

102
int main() {
103
  int mode, gameOver, currentPlayer = 1;
104
  char winner;
105
  srand(time(NULL));
106

107
  printf("欢迎来到井字棋！\n1. 双人对战\n2. 人机对战\n请选择：");
108
  scanf("%d", &mode);
109
  if (mode != 1 && mode != 2) return 1;
110

111
  do {
112
    initBoard();
113
    gameOver = 0;
114
    currentPlayer = 1;
115
    while (!gameOver) {
116
      displayBoard();
117
      if (mode == 1) {
118
        if (currentPlayer == 1) {
119
          if (playerMove(currentPlayer, PLAYER1)) {
120
            winner = checkWin();
121
            if (winner != ' ') {
122
              displayBoard(); printf("玩家1获胜！\n"); gameOver = 1;
123
            }
124
            else if (isDraw()) {
125
              displayBoard(); printf("平局！\n"); gameOver = 1;
126
            }
127
            else currentPlayer = 2;
128
          }
129
        }
130
        else {
131
          if (playerMove(currentPlayer, PLAYER2)) {
132
            winner = checkWin();
133
            if (winner != ' ') {
134
              displayBoard(); printf("玩家2获胜！\n"); gameOver = 1;
135
            }
136
            else if (isDraw()) {
137
              displayBoard(); printf("平局！\n"); gameOver = 1;
138
            }
139
            else currentPlayer = 1;
140
          }
141
        }
142
      }
143
      else {
144
        // 人机对战（简化，电脑随机落子）
145
      }
146
    }
147
    char again;
148
    printf("再玩一局？(y/n): ");
149
    scanf(" %c", &again);
150
    if (again != 'y' && again != 'Y') gameOver = 1;
151
    else gameOver = 0;
152
  } while (!gameOver);
153
  printf("谢谢游玩！\n");
154
  return 0;
155
}

1
#include <stdio.h>
2
int main()
3
{
4
  char a[15], b[5], c[5];
5
  scanf("%s %s %s", a, b, c);
6
  printf("a=%s\nb=%s\nc=%s\n", a, b, c);
7
  scanf("%s", a);
8
  printf("a=%s\n", a);
9
}

1
#include <stdio.h>
2
#define N 80
3

4
int main()
5
{
6
  char s[N];
7
  int num = 0;
8
  gets(s);
9

10
  int i = 0;
11
  while (s[i] != '\0') {
12
    if (s[i] >= '0' && s[i] <= '9') {
13
      num = num * 10 + (s[i] - '0');
14
    }
15
    i++;
16
  }
17
  printf("%d\n", num);
18
  return 0;
19
}

1
#include <stdio.h>
2
#define N 80
3
int main()
4
{
5
  char str1[N], str2[N];
6
  int i = 0, j = 0;
7
  gets(str1);
8
  for(i=1,j=0;str1[i];i+=2)
9
  {
10
    if(str1[i]%2==1)
11
    {
12
      str2[j++]=str1[i];
13
    }
14
  }
15
  str2[j]=0;
16
  puts(str1);
17
  puts(str2);
18
  return 0;
19
}