Merge pull request AllAlgorithms#170 from Ankit2598/patch-3

 Magic Square.cpp

Author: Christian Bender

math/Magic Square.cpp

@@ -0,0 +1,58 @@
+#include <iostream>
+
+#define N 3
+using namespace std;
+
+
+bool isMagicSquare(int mat[][N])
+{
+
+ int sum = 0;
+ for (int i = 0; i < N; i++)
+ sum = sum + mat[i][i];
+
+
+ for (int i = 0; i < N; i++) {
+
+ int rowSum = 0;
+ for (int j = 0; j < N; j++)
+ rowSum += mat[i][j];
+
+
+ if (rowSum != sum)
+ return false;
+ }
+
+
+ for (int i = 0; i < N; i++) {
+
+ int colSum = 0;
+ for (int j = 0; j < N; j++)
+ colSum += mat[j][i];
+
+
+ if (sum != colSum)
+ return false;
+ }
+
+ return true;
+}
+
+
+int main()
+{
+ int mat[3][N] ,i,k;
+ 
+ for(i=0; i<3; i++)
+ {
+ for(k=0; k<3; k++)
+ cin>>mat[i][k];
+ }
+
+ if (isMagicSquare(mat))
+ cout << "Magic Square";
+ else
+ cout << "Not a magic Square";
+
+ return 0;
+}