how to take input and add ,subtract , multiply and divide the two matrices?

Answer 1

include <iostream>
using namespace std;

int main()
{
int a[10][10], b[10][10], mult[10][10], r1, c1, r2, c2, i, j, k;

cout << "Enter rows and columns for first matrix: ";
cin >> r1 >> c1;
cout << "Enter rows and columns for second matrix: ";
cin >> r2 >> c2;
while (c1!=r2)
{
cout << "Error! column of first matrix not equal to row of second.";

cout << "Enter rows and columns for first matrix: ";
cin >> r1 >> c1;

cout << "Enter rows and columns for second matrix: ";
cin >> r2 >> c2;
}

cout << endl << "Enter elements of matrix 1:" << endl;
for(i = 0; i < r1; ++i)
for(j = 0; j < c1; ++j)
{
cout << "Enter element a" << i + 1 << j + 1 << " : ";
cin >> a[i][j];
}

cout << endl << "Enter elements of matrix 2:" << endl;
for(i = 0; i < r2; ++i)
for(j = 0; j < c2; ++j)
{
cout << "Enter element b" << i + 1 << j + 1 << " : ";
cin >> b[i][j];
}

for(i = 0; i < r1; ++i)
for(j = 0; j < c2; ++j)
mult[i][j]=0;

//This is what you need

for(i = 0; i < r1; ++i)
for(j = 0; j < c2; ++j)
for(k = 0; k < c1; ++k)
mult[i][j] += a[i][k] * b[k][j];

cout << endl << "Output Matrix: " << endl;
for(i = 0; i < r1; ++i)
for(j = 0; j < c2; ++j)
{
cout << " " << mult[i][j];
if(j == c2-1)
cout << endl;
}

return 0;
}

Answer 2

divide two matrices it is not possible mathematically (from my knowledge) then how can anyone help you.
you can multiply by inverse but cannot divide two matrices.

Answer 3

i require the multiplicatiion method plzz