c Write a program that simulates a magic square using 3 one dimensional parallel arrays of integer type. Each one the arrays corresponds to a row of the magic square. The program asks the user to enter the values of the magic square row by row and informs the user if the grid is a magic square or not. flowchart

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Explanation:

//program to check if the entered grid is magic square or not

/**c++ standard libraries

*/

#include<bits/stdc++.h>

using namespace std;

/**function to check whether the entered grid is magic square or not

*/

int isMagicSquare(int arr[3][3]){

  int i,j,sum=0,sum1=0,rsum,csum;

  for(i=0;i<3;i++){

      sum+=arr[i][i];

      sum1+=arr[i][2-i];

  }

  if(sum!=sum1){

      return 0;

  }

  for(i=0;i<3;i++){

      rsum=0;

      csum=0;

      for(j=0;j<3;j++){

          rsum+=arr[i][j];

          csum+=arr[j][i];

      }

      if(sum!=rsum){

          return 0;

      }

      if(sum!=csum){

          return 0;

      }

  }

  return 1;

}

/** main function to get user entries and

* call function

* and print output

*/

int main(){

  int i,j,arr[3][3]={0};

  for(i=0;i<3;i++){

      for(j=0;j<3;j++){

          cout<<"Enter the number for row "<<i<<" and column "<<j<<" : ";

          cin>>arr[i][j];

      }

  }

  int ret = isMagicSquare(arr);

  if(ret==1){

      cout<<"This is a Lo Shu magic square"<<endl;

  }

  else{

      cout<<"This is not a Lo Shu magic square"<<endl;

  }

  return 0;

}

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