2014_B t5打印图形

Posted 2022-12-13 Respect@

打印图形

小明在X星球的城堡中发现了如下图形和文字：

rank=3
*

---

rank=5
*
* *
* *
* * * *
* *
* * * *
* * * *
* * * * * * * *
* *
* * * *
* * * *
* * * * * * * *

---

---

---

---

ran=6
*
* *
* *
* * * *
* *
* * * *
* * * *
* * * * * * * *
* *
* * * *
* * * *
* * * * * * * *
* * * *
* * * * * * * *
* * * * * * * *
* * * * * * * * * * * * * * * *
* *
* * * *
* * * *
* * * * * * * *
* * * *
* * * * * * * *
* * * * * * * *
* * * * * * * * * * * * * * * *
* * * *
* * * * * * * *
* * * * * * * *
* * * * * * * * * * * * * * * *

---

---

---

---

小明开动脑筋，编写了如下的程序，实现该图形的打印。

#define N 70

void f(char a[][N], int rank, int row, int col)

if(rank==1)
a[row][col] = ‘*’;
return;

int w = 1;
int i;
for(i=0; i<rank-1; i++) w *= 2;

____________________________________________;
f(a, rank-1, row+w/2, col);
f(a, rank-1, row+w/2, col+w);

int main()

char a[N][N];
int i,j;
for(i=0;i<N;i++)
for(j=0;j<N;j++) a[i][j] = ’ ';

f(a,6,0,0);

for(i=0; i<N; i++)
	for(j=0; j<N; j++) printf("%c",a[i][j]);
	printf("\\n");


return 0;

请仔细分析程序逻辑，填写缺失代码部分。

通过浏览器提交答案。注意不要填写题目中已有的代码。也不要写任何多余内容（比如说明性的文字）

#include <iostream>

using namespace std;
#define N 70

void f(char a[][N], int rank, int row, int col) 
    if (rank == 1) 
        a[row][col] = '*';
        return;
    

    int w = 1;
    int i;
    for (i = 0; i < rank - 1; i++)
        w *= 2;

//    ____________________________________________;
    f(a, rank - 1, row , col+w/2);//a,5,0,16，处理顶上的三角形
    f(a, rank - 1, row + w / 2, col);//a,5,16,0，处理左下角
    f(a, rank - 1, row + w / 2, col + w);//a,5,16,16，处理右下角
    
//    f(a, rank-1, row+w/2, col);
//	f(a, rank-1, row+w/2, col+w);


int main() 
    char a[N][N];
    int i, j;
    for (i = 0; i < N; i++)
        for (j = 0; j < N; j++) a[i][j] = ' ';

    f(a, 6, 0, 0);

    for (i = 0; i < N; i++) 
        for (j = 0; j < N; j++) printf("%c", a[i][j]);
        printf("\\n");
    

    return 0;