Question

在此，我的任务是编写一个 C 程序来绘制一个英文标尺，其长度和方向（水平 / 垂直）由用户给出。我编写了一个垂直打印标尺的程序，我想编写另一个水平打印标尺的程序，然后使用 if 函数加入两个程序。但是水平打印标尺的程序效果不佳。我需要一些帮助。这是垂直打印标尺的程序。

#include<stdio.h>
int main(){
  int q,num,x;
  int y,p,n;
  printf("Enter height of central dashes\n");
  scanf("%d",&n);
  printf("Enter number of inches\n");
  scanf("%d",&num);
  for(x=0;x<num;x++)
  {
    for(q=0;q<n;q++)
    {
      printf("-");
    }
    printf("%d\n",x);
    for(p=0;p<n-3;p++)
    {
      printf("-");
    }
    printf("\n");
    for(p=0;p<n-2;p++)
    {
      printf("-");
    }
    printf("\n");
    for(p=0;p<n-3;p++)
    {
      printf("-");
    }
    printf("\n");
    for(p=0;p<n-1;p++)
    {
      printf("-");
    }
    printf("\n");
    for(p=0;p<n-3;p++)
    {
      printf("-");
    }
    printf("\n");
    for(p=0;p<n-2;p++)
    {
      printf("-");
    }
    printf("\n");
    for(p=0;p<n-3;p++)
    {
      printf("-");
    }
    printf("\n");
  }
  for(y=0;y<n;y++)
  {
    printf("-");
  }
  printf("%d",x);
  printf("\n");
  return 0;
}

我需要一些关于如何水平打印这把尺子的想法。可能是使用循环。这是我写的用来水平打印尺子的程序。但它只能打印 1 英寸的间隔。抱歉缩进，无法编辑

#include<stdio.h>
int main()
{
int q,num,x;
int y,p,n=9;
printf("Enter number of inches\n");
scanf("%d",&num);
for(x=1;x<=num;x++)
{
for(q=1;q<=n-8;q++)
{
printf(" | ");
}
for(q=2;q<=n-1;q++)
{
printf("   ");
}
for(q=9;q<=n-0;q++)
{
printf(" | ");
}
printf("\n");
for(q=1;q<=n-8;q++)
{
printf(" | ");
}
for(q=2;q<=n-5;q++)
{
printf("   ");
}
for(q=5;q<=5;q++)
{
printf(" | ");
}
for(q=6;q<=n-1;q++)
{
printf("   ");
}
for(q=9;q<=n;q++)
{
printf(" | ");
}
printf("\n");
for(q=1;q<=n-8;q++)
{
printf(" | ");
}
for(q=2;q<=n-7;q++)
{
printf("   ");
}
for(q=3;q<=n-6;q++)
{
printf(" | ");
}
for(q=4;q<=n-5;q++)
{
printf("   ");
}
for(q=5;q<=n-4;q++)
{
printf(" | ");
}
for(q=6;q<=n-3;q++)
{
printf("   ");
}
for(q=7;q<=n-2;q++)
{
printf(" | ");
}
for(q=8;q<=n-1;q++)
{
printf("   ");
}
for(q=9;q<=n;q++)
{
printf(" | ");
}
printf("\n");
for(q=1;q<=n;q++)
{
printf(" | ");
}
printf("");
}
return 0;
}

This is the output for horizontal this is the output for vertical

0

Answer 1

这里不是给出你家庭作业问题的全部答案，而是一个良好的开端。的程序使用递归在 C语言中打印一个标尺。试着玩代码，使其符合你的任务和需求。代码取自一本书

代码：

//using recursion to subdivisionside a ruler
#include <stdio.h>
#include <stdlib.h>
const int len = 66;
const int divisions = 5;
void subdivisionside(char ar[], int min, int max, int level);
int main()
{
    char ruler[len];
    int i;
    for (int i = 1; i < (len - 2); i++)
        ruler[i] = ' ';
    ruler[len - 1] = '\0';
    int min = 0;
    int max = len - 2;
    ruler[min] = ruler[max] = '|';
    printf("%s\n", ruler);
    for (i = 1; i <= divisions; i++)
    {
        subdivisionside(ruler, min, max, i);
        printf("%s\n", ruler);
        for (int j = 1; j < len - 2; j++)
            ruler[j] = ' ';
    }
    return 0;
}
void subdivisionside(char ar[], int low, int high, int level)
{
    if (level == 0)
        return;
    int mid = (high + low) / 2;
    ar[mid] = '|';
    subdivisionside(ar, low, mid, level - 1);
    subdivisionside(ar, mid, high, level - 1);
}

电流输出:

|                                                               |
|                               |                               |
|               |               |               |               |
|       |       |       |       |       |       |       |       |
|   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |

Ref:C++ Recursive function for printing a ruler not working.

希望这有助于和快乐的编码！