Adding Cpp code

Half_diagonal_matrix.cpp

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+#include<iostream>
+
+using namespace std;
+
+int main()
+{
+	int a[50][50], n, i, sum[4]={0,0,0,0}, b=1, j;
+
+	cout<<"Checking whether center element of matrix equals sum of half diagonals"<<endl<<endl;
+	cout<<"Enter value of order of matrix is an odd ordered matrix : ";
+	cin>>n;
+
+	for(i=0; i<n; i++)
+	{
+		for(int j=0; j<n; j++)
+		cin>>a[i][j];
+	}
+	cout<<endl<<endl;
+
+	for(i=0; i<n; i++)
+	{
+		for(int j=0; j<n; j++)
+		cout<<a[i][j]<<" ";
+
+		cout<<endl;
+	}
+
+	for(i=0; i<n/2; i++)
+	{
+		sum[0]+=a[i][i];
+	}
+
+	cout<<endl<<"Sum of half diagonal 1 : "<<sum[0]<<endl;
+
+	i=n;
+	j=-1;
+	do
+	{
+		i--;
+		j++;
+		sum[1]+=a[i][j];
+		b++;
+	}while(b<=n/2);
+
+	cout<<endl<<"Sum of half diagonal 2 : "<<sum[1]<<endl;
+
+	i=-1;
+	j=n;
+	b=1;
+	do
+	{
+		i++;
+		j--;
+		sum[2]+=a[i][j];
+		b++;
+	}while(b<=n/2);
+
+	cout<<endl<<"Sum of half diagonal 3 : "<<sum[2]<<endl;
+
+	i=n;
+	j=n;
+	b=1;
+	do
+	{
+		i--;
+		j--;
+		sum[3]+=a[i][j];
+		b++;
+	}while(b<=n/2);
+
+	cout<<endl<<"Sum of half diagonal 4 : "<<sum[3]<<endl<<endl;
+
+	if(sum[0]==sum[1] && sum[1]==sum[2] && sum[2]==sum[3])
+	cout<<"Yes";
+
+	else
+	cout<<"No";
+
+	return 0;
+}
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