My feature3

Cpp/Maths/Average.cpp

@@ -0,0 +1,16 @@
+#include<iostream>
+using namespace std;
+int main()
+{
+    int n;
+    cout<<"Enter the size of array : ";
+    cin>>n;
+    int a[n],i,average;
+    float sum=0;
+    cout<<"Enter array elements : \n";
+    for(i=0;i<n;i++)
+    cin>>a[i];
+    for(i=0;i<n;i++)
+    sum=sum+a[i];
+    cout<<"Average : "<<(sum/n);
+}

Cpp/Programs/Diamond_Pattern.cpp

@@ -0,0 +1,25 @@
+#include<iostream>
+using namespace std;
+int main()
+{
+    int r,i,j,k;
+    cout<<"Enter no. of rows after which u want to mirror image below of above : ";
+    cin>>r;
+    cout<<"Diamond Pattern : \n";
+    for(i=1;i<=r;i++)
+    {
+        for(j=1;j<=r-i;j++)
+        cout<<" ";
+        for(k=1;k<=((2*i)-1);k++)
+        cout<<"*";
+        cout<<"\n";
+    }
+    for(i=1;i<r;i++)
+    {
+        for(j=1;j<=i;j++)
+        cout<<" ";
+        for(k=1;k<=((2*r)-(2*i)-1);k++)
+        cout<<"*";
+        cout<<"\n";
+    }
+}

Cpp/Programs/Matrix_Transpose.cpp

@@ -0,0 +1,36 @@
+#include<iostream>
+using namespace std;
+int main()
+{
+    int r,c,i,j;
+    cout<<"Enter rows : ";
+    cin>>r;
+    cout<<"Enter columns : ";
+    cin>>c;
+    int A[r][c],B[c][r];
+    cout<<"Enter matrix elements : \n";
+    for(i=0;i<r;i++)
+    {
+        for(j=0;j<c;j++)
+        cin>>A[i][j];
+    }
+    cout<<"Matrix A : \n";
+    for(i=0;i<r;i++)
+    {
+        for(j=0;j<c;j++)
+        cout<<A[i][j]<<"\t";
+        cout<<"\n";
+    }
+    for(i=0;i<c;i++)
+    {
+        for(j=0;j<r;j++)
+            B[i][j]=A[j][i];
+    }
+    cout<<"Transpose Of Matrix A : \n";
+    for(i=0;i<c;i++)
+    {
+        for(j=0;j<r;j++)
+        cout<<B[i][j]<<"\t";
+        cout<<"\n";
+    }
+}