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法律C++ 程式，用於檢查兩個矩陣的可乘性
兩個矩陣如果可以相乘，則稱之為可乘的。只有當第一個矩陣的列數等於第二個矩陣的行數時，才有可能相乘。例如。
Number of rows in Matrix 1 = 3 Number of columns in Matrix 1 = 2 Number of rows in Matrix 2 = 2 Number of columns in Matrix 2 = 5 Matrix 1 and Matrix 2 are multiplicable as the number of columns of Matrix 1 is equal to the number of rows of Matrix 2.
一個用於檢查兩個矩陣可乘性的程式如下。
示例
#include<iostream>
using namespace std;
int main() {
int row1, column1, row2, column2;
cout<<"Enter the dimensions of the first matrix:"<< endl;
cin>>row1;
cin>>column1;
cout<<"Enter the dimensions of the second matrix: "<<endl;
cin>>row2;
cin>>column2;
cout<<"First Matrix"<<endl;
cout<<"Number of rows: "<<row1<<endl;
cout<<"Number of columns: "<<column1<<endl;
cout<<"Second Matrix"<<endl;
cout<<"Number of rows: "<<row2<<endl;
cout<<"Number of columns: "<<column2<<endl;
if(column1 == row2)
cout<<"Matrices are multiplicable";
else
cout<<"Matrices are not multiplicable";
return 0;
}產出
Enter the dimensions of the first matrix: 2 3 Enter the dimensions of the second matrix: 3 3 First Matrix Number of rows: 2 Number of columns: 3 Second Matrix Number of rows: 3 Number of columns: 3 Matrices are multiplicable
在上述程式中，首先由使用者輸入兩個矩陣的維度。這顯示如下。
cout<<"Enter the dimensions of the first matrix:"<< endl; cin>>row1; cin>>column1; cout<<"Enter the dimensions of the second matrix: "<<endl; cin>>row2; cin>>column2;
然後，打印出矩陣的行數和列數。這顯示如下。
cout<<"First Matrix"<<endl; cout<<"Number of rows: "<<row1<<endl; cout<<"Number of columns: "<<column1<<endl; cout<<"Second Matrix"<<endl; cout<<"Number of rows: "<<row2<<endl; cout<<"Number of columns: "<<column2<<endl;
如果矩陣 1 中的列數等於矩陣 2 中的行數，則會打印出矩陣可乘。否則，會打印出矩陣不可乘。這由以下程式碼段演示。
if(column1 == row2) cout<<"Matrices are multiplicable"; else cout<<"Matrices are not multiplicable";
更新於： 24-6-2020
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