Matrix_Multiplication.cpp

#include<bits/stdc++.h>
using namespace std;
int main()
{
  #ifndef ONLINE_JUDGE
      freopen("input.txt","r",stdin);
      freopen("output.txt","w",stdout);
  #endif
  int n1,n2,n3; //rows in first matrix column in first and column in second n1xn2 n2xn3
  cin>>n1>>n2>>n3;
  int m1[n1][n2];
  int m2[n2][n3];
  for(int i=0;i<n1;i++)
  {
      for(int j=0;j<n2;j++)
      {
          cin>>m1[i][j];
      }
  }
  for(int i=0;i<n2;i++)
  {
      for(int j=0;j<n3;j++)
      {
          cin>>m2[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] += m1[i][k]*m2[k][j];
          }
      }
  }
  for(int i=0;i<n1;i++)
  {
      for(int j=0;j<n3;j++)
      {
          cout<<ans[i][j]<<" ";
      }
      cout<<endl;
  }
  return 0;
}