编写程序演示汉诺塔游戏步骤（3个圆盘），效果如下： 1: move 1 from A to C. 2: move 2 from A to B. 3: move 1 from C to B. 4: move 3 from A to C. 5: move 1 from B to A. 6: move 2 from B to C. 7: move 1 from A to C.

以下是汉诺塔游戏的 C 语言程序，可以演示 3 个圆盘的步骤：

#include <stdio.h>

void hanoi(int n, char A, char B, char C) {
if (n == 1) {
printf("move 1 from %c to %c.\n", A, C);
} else {
hanoi(n-1, A, C, B);
printf("move %d from %c to %c.\n", n, A, C);
hanoi(n-1, B, A, C);
}
}

int main() {
hanoi(3, 'A', 'B', 'C');
return 0;
}