TheAlgorithms-C-Plus-Plus/Others/Sparse matrix.cpp

/*A sparse matrix is a matrix which has number of zeroes greater than (m*n)/2,
where m and n are the dimensions of the matrix.*/
#include <iostream>
using namespace std;

int main()
{
  int m,n;
  int counterZeros=0;
  cout << "Enter dimensions of matrix (seperated with space): ";
  cin >> m >> n;
  int a[m][n];
  cout << "Enter matrix elements:";
  cout << "\n";

  // reads the matrix from stdin
  for(int i=0;i<m;i++)
  {
    for(int j=0;j<n;j++)
    {
        cout << "element? ";
        cin >> a[i][j];
    }
  }

  // counts the zero's
  for(int i=0;i<m;i++)
  {
    for(int j=0;j<n;j++)
    {
      if(a[i][j]==0)
       counterZeros++; //Counting number of zeroes
    }
  }

  // makes sure the matrix is a sparse matrix
  if(counterZeros>((m*n)/2)) //Checking for sparse matrix
   cout << "Sparse matrix";
  else
   cout << "Not a sparse matrix";
}