矩阵相乘.txt

using System;

public class MatrixMultiply
{
	public static void Main()
	{ 
		int a,b,c,d;
		Console.WriteLine ("该程序将求出两个矩阵的积:");
		Console.WriteLine ("请指定矩阵A的行数:");
		a=int.Parse (Console.ReadLine ());
		Console.WriteLine ("请指定矩阵A的列数:");
		b=int.Parse (Console.ReadLine ());
		int[,] MatrixA=new int [a,b];
		for(int i=0;i<a;i++)
		{
			for(int j=0;j<b;j++)
			{
				Console.WriteLine ("请输入矩阵A第{0}行第{1}列的值:",i+1,j+1);
				MatrixA[i,j]=int.Parse (Console.ReadLine ());
			}
		}
		Console.WriteLine ("矩阵A输入完毕.");
		Console.WriteLine ("请指定矩阵B的行数:");
		c=int.Parse (Console.ReadLine ());
		Console.WriteLine ("请指定矩阵B的列数:");
		d=int.Parse (Console.ReadLine ());
		int[,] MatrixB=new int [c,d];
		for(int i=0;i<c;i++)
		{
			for(int j=0;j<d;j++)
			{
				Console.WriteLine ("请输入矩阵A第{0}行第{1}列的值:",i+1,j+1);
				MatrixB[i,j]=int.Parse (Console.ReadLine ());
			}
		}
		Console.WriteLine ("矩阵B输入完毕.");
		Console.WriteLine ("矩阵A为:");
		outputMatrix(MatrixA,a,b);
		Console.WriteLine ("矩阵B为:");
		outputMatrix(MatrixB,c,d);
		if(b!=c)
		{
			Console.WriteLine ("矩阵A的列数与矩阵B的行数不相等,无法进行乘积运算!");
			return;
		}
		else
		{
			Console.WriteLine ("矩阵A与矩阵B的乘积为:");
		}
		int[,] MatrixC=new int [a,d];
		for(int i = 0; i < a; i++)
		{
			for(int j = 0; j < d; j++)
			{
				MatrixC[i,j] = 0;
				for(int k = 0; k < b; k++)
				{
					MatrixC[i,j] += MatrixA[i,k] * MatrixB[k,j];
				}
			}
		}
		outputMatrix(MatrixC,a,d);
	}
	private static void outputMatrix(int[,] MatrixX, int rowCount, int columnCount)
	{
		for(int i = 0; i < rowCount; i++)
		{ 
			for(int j = 0; j < columnCount; j++)
			{
				Console.Write(MatrixX[i,j] + "\t");
			}
			Console.WriteLine();
		}
	}
}