使用用户输入数字创建 3x3 矩阵 C#
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原文地址: http://stackoverflow.com/questions/19220942/
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Creating a 3x3 matrix with user input numbers C#
提问by user2853957
im trying to create a 3x3 matrix in c# language, i know how to create the matrix but i need help for user input numbers. I hope someone can help me thank you for that.
我试图用 c# 语言创建一个 3x3 矩阵，我知道如何创建矩阵，但我需要用户输入数字的帮助。我希望有人能帮助我谢谢你。
采纳答案by iTURTEV
I will add a while loop and use double.TryParse to validate user's input. Usin BWHazel's code:
我将添加一个 while 循环并使用 double.TryParse 来验证用户的输入。使用 BWHazel 的代码：
const int MATRIX_ROWS = 3;
const int MATRIX_COLUMNS = 3;
double[,] matrix = new double[MATRIX_ROWS, MATRIX_COLUMNS];
for (int i = 0; i < MATRIX_ROWS; i++)
{
for (int j = 0; j < MATRIX_COLUMNS; j++)
{
double input;
Console.Write("Enter value for ({0},{1}): ", i, j);
while (!double.TryParse(Console.ReadLine(), out input)
{
Console.Write("Enter correct value for ({0},{1}): ", i, j);
}
matrix[i,j] = input
}
}
To get the totals for all rows you can use following snippet:
要获取所有行的总数，您可以使用以下代码段：
for (int i = 0; i < MATRIX_ROWS; i++)
{
// The some for each row
double sum = 0.0;
for (int j = 0; j < MATRIX_COLUMNS; j++)
{
sum += matrix[i,j];
}
Console.WriteLine(string.format("The sum for row {0} is: {1}", i, sum));
}
回答by BWHazel
If you are using the command-line, something like this should work:
如果您使用命令行，则应该可以使用以下方法：
const int MATRIX_ROWS = 3;
const int MATRIX_COLUMNS = 3;
double[,] matrix = new double[MATRIX_ROWS, MATRIX_COLUMNS];
for (int i = 0; i < MATRIX_ROWS; i++)
{
for (int j = 0; j < MATRIX_COLUMNS; j++)
{
Console.Write("Enter value for ({0},{1}): ", i, j);
matrix[i,j] = double.Parse(Console.ReadLine());
}
}
This assumes you are using doublefor the values. The .Parse()method is available for all .NET numeric types including int.
这假设您正在使用double这些值。该.Parse()方法适用于所有 .NET 数字类型，包括int.
回答by Dileep Kumar M
private void button1_Click(object sender, EventArgs e)
{
txtResult.Text=GenerateMatrix(Int32.Parse(txtRow.Text), Int32.Parse(txtColumn.Text));
}
private string GenerateMatrix(int Row,int Column)
{
string matrix = string.Empty;
string Result = string.Empty;
int nxtline=0;
for (int i = 0; i < Row; i++)
{
for (int j = 0; j < Column; j++)
{
if (nxtline==Column)
{
matrix = matrix + Environment.NewLine;
nxtline = 0;
}
matrix = matrix+"*";
nxtline = nxtline + 1;
}
}
Result = matrix;
return Result;
}
