嵌套While循环（帮助）.. [英] Nested While Loop (help)..

问题描述

我需要编写一个打印星号的代码，第一行为1个星号，第二行为2个，第三行为3个等。

知道我经过多次尝试后，我感到非常沮丧。



请关注一下。 。 。 。 。

Hi I''m in a need to write a code which print asterisks in such a way that 1 asterisk for first line, 2 for second line, 3 for third line etc.
Know I''m fully frustrated after trying a lot of times.

Please have an eye. . . . .

#include <iostream>

using namespace std;

int main()
{
    int n = 5;
    int row = 0;
    int colum = 0;
    while(row<n)
    {
        
        while(colum<row)
        {
            cout << "*" << '\n';
            colum++;
        }
        row++;
    }
    return 0;
}

推荐答案

我通常不会做人的作业，但是你给了它一个拍摄，大多数人只是要求我们这样做。你犯了两个错误：



1 - 你在每个*之后发出换行符，你需要在每组* s之后发出换行符

2 - 你没有将colum重置为0，所以你的行永远不会变大。



我建议学习使用你的调试器，帮助您找到这两个问题。我不知道你正在使用什么编译器，但它们都支持断点AFAIK。

I don''t normally do people''s homework, but you''ve given it a shot, most people just ask us to do it. You''ve made two mistakes:

1 - you emit a newline after every *, you need to emit a newline after each group of *s
2 - you don''t reset colum to 0, so your rows never get any bigger.

I recommend learning to use your debugger, that should have helped you find both of these issues. I don''t know what compiler you''re using, but they all suppor breakpoints AFAIK.

#include <iostream>

using namespace std;
 
int main()
{
    int n = 5;
    int row = 0;
    int colum = 0;
    while(row<n)>
    {
        
        while(colum<row)>
        {
            cout << "*";
            colum++;
        }

		cout << "\n";
		colum = 0;
        row++;
    }
    return 0;
}</iostream>

在外部while循环中，您需要重置列的值。否则它只会在第一次通过内部。

Inside the outer while loop you need to reset the value of column. Otherwise it only goes through the inner while the first time.

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