ADD file via upload

shengcheng.c

@@ -0,0 +1,50 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+void print_sudoku(char sudoku[9][9]) {
+    for (int i = 0; i < 9; i++) {
+        if (i % 3 == 0 && i != 0) {
+            printf("-------------------------\n");
+        }
+        for (int j = 0; j < 9; j++) {
+            if (j % 3 == 0 && j != 0) {
+                printf("| ");
+            }
+            printf("%c ", sudoku[i][j]);
+        }
+        printf("\n");
+    }
+}
+
+int main() {
+    char sudoku_board[9][9];
+
+    // 初始化随机数种子
+    srand(time(NULL));
+
+    // 生成不完整数独盘
+    for (int i = 0; i < 9; i++) {
+        for (int j = 0; j < 9; j++) {
+            sudoku_board[i][j] = '.';
+        }
+    }
+
+    for (int i = 0; i < 9; i++) {
+        for (int count = 0; count < 3; count++) {
+            int j;
+            do {
+                j = rand() % 9;
+            } while (sudoku_board[i][j] != '.');
+            int x;
+            do {
+                x = (rand() % 9) + 1;
+            } while (strchr(sudoku_board[i], x + '0'));
+            sudoku_board[i][j] = x + '0';
+        }
+    }
+
+    print_sudoku(sudoku_board);
+
+    return 0;
+}