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matrixmultiplication.cpp
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matrixmultiplication.cpp
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//given 2 arrays n1xn2 and n2xn3 and multiply matrix
#include <bits/stdc++.h>
using namespace std;
int main()
{
int n1, n2, n3;
cin >> n1 >> n2 >> n3;
int arr1[n1][n2];
for (int i = 0; i < n1; i++)
{
for (int j = 0; j < n2; j++)
{
cin >> arr1[i][j];
}
}
int arr2[n2][n3];
for (int i = 0; i < n2; i++)
{
for (int j = 0; j < n3; j++)
{
cin >> arr2[i][j];
}
}
int ans[n1][n3];
for (int i = 0; i < n1; i++)
{
for (int j = 0; j < n3; j++)
{
ans[i][j]=0;
}
}
for (int i = 0; i < n1; i++)
{
for (int j = 0; j < n3; j++)
{
for (int k = 0; k < n2; k++)
{
ans[i][j]+=arr1[i][k]*arr2[k][j];
}
}
}
for (int i = 0; i < n1; i++)
{
for (int j = 0; j < n3; j++)
{
cout<<ans[i][j]<<" ";
}
cout<<endl;
}
return 0;
}