Sanket Akadkar

• Sep 2nd, 2011

 

#include
#include

class matrix{
private:
int mat[5][5];
int row;
int column;
public:
matrix(int,int);
matrix(matrix&);
void getdata();
matrix operator-(matrix);
matrix operator+(matrix);
matrix operator*(matrix);
void display();
};

matrix::matrix(int r,int c)
{
cout<<"constructor to initiliaze no of rows and columns"< row=r;column=c;
}

matrix::matrix(matrix& m)
{
row=m.row;
column=m.column;

cout<<"Copy constructor"< for(int i=0;i {
for(int j=0;j {
mat[i][j]=m.mat[i][j];
}
}
}

void matrix::getdata()
{
cout<<"Value input:"< for(int i=0;i {
for(int j=0;j {
cout<<"Value("< cin>>mat[i][j];
}
}


}

matrix matrix::operator+(matrix a)
{
cout<<"Addition operator"<
matrix temp(row,column);

for(int i=0;i {
for(int j=0;j {
temp.mat[i][j]=mat[i][j]+a.mat[i][j];
}
}
return temp;
}

matrix matrix::operator-(matrix a)
{
cout<<"Subtraction operator"<
matrix temp(row,column);

for(int i=0;i {
for(int j=0;j {
temp.mat[i][j]=mat[i][j]-a.mat[i][j];
}
}
return temp;
}

matrix matrix::operator*(matrix a)
{
cout<<"Multiplaction operator"<
matrix temp(row,column);

for (int i=0;i {
for (int j=0;j {
temp.mat[i][j]=0;
for(int k=0;k {
temp.mat[i][j]=temp.mat[i][j]+(mat[i][k]*a.mat[k][j]);
}
}
}

return temp;
}

void matrix::display()
{
cout<<"The matrix is "< for(int i=0;i {
for(int j=0;j {
cout< }
cout< }
}

int main()
{
clrscr();
matrix m1(2,2),m2(2,2),m3(2,2);

m1.getdata();
m2.getdata();

m3=m1+m2;
m3.display();

m3=m1-m2;
m3.display();

m3=m1*m2;
m3.display();

getch();
return 0;
}

binoy

• Aug 23rd, 2012

 

Code
#include<iostream.h>


#include<conio.h>


/* function to check whether the order of matrix are same or not *//* function to read data for matrix*/"enter the number of rows


""enter the number of columns


""enter the elements of the matrix


"/* function to add two matrix *//* function to subtract two matrix *//* function to display the contents of the matrix */" "/* main function */"Addition of matrices


""the result is


""subtraction of matrices


""The result is 


""order of the input matrices is not identical


"

JoolsL

• Nov 19th, 2012

 

In both the above answers the op overloads should be using a const ref as input. You should have a (private) ctor that makes the matrix from the data, and should use RVO in the return.