Fraction

ofstream outputData("out.txt");
if (!inputData||!outputData)
{
cerr<<"Open file error!"<<endl;
exit(1);
a.eof())
{
inputData>>m1>>m2;
outputData<<"m1=\n"<<m1;
outputData<<"m2=\n"<<m2;
outputData<<"m1*m2=\n"<<m1*m2;
outputData<<"==============================================="<<endl;
//matrix.cpp
/*（1） 乘法运算符*
（2） 插入运算符<<
（3） 提取运算符>>*/
#include <iostream.h>
#include <iomanip.h>
#include <fstream.h>
#include"stdlib.h"
class Matrix
}
return 0;
}
/******************在此添加代码**********************/
/**************************************************/
private:
int a;
int b;
int c;
int d;
};
{
public:
Matrix(int x1=0,int x2=0,int x3=0,int x4=0);
Matrix operator*(Matrix& m2 );
friend ostream& operator<<(ostream&,Matrix&);
friend istream& operator>>(istream&,Matrix&);
}
/******************在此添加代码**********************/
/**************************************************/
int main()
{
Matrix m1,m2;
ifstream inputData("in.txt");
Matrix::Matrix(int x1,int x2,int x3,int x4)
{a=x1;
b=x2;
c=x3;
d=x4;
}
Matrix Matrix::operator * (Matrix& m2)
{
return Matrix((a*m2.a+b*m2.c),(a*m2.b+b*m2.d),(c*m2.a+d*m2.c),(c*m2.b+d*m2.d));
return output;
}
istream& operator>>(istream& input,Matrix& m)
{cout<<"请输入矩阵的值:"<<endl;
input>>m.a;
input>>m.b;
input>>m.c;
input>>m.d;
return input;
}
ostream& operator<<(ostream& output,Matrix& m)
{output<<" "<<m.a<<" "<<m.b<<" "<<endl;
output<<" "<<m.c<<" "<<m.d<<" "<<endl;