diff --git a/Algorithms/Warmup/Diagonal-Difference.cpp b/Algorithms/Warmup/Diagonal-Difference.cpp
new file mode 100644
index 0000000..b7d7eae
--- /dev/null
+++ b/Algorithms/Warmup/Diagonal-Difference.cpp
@@ -0,0 +1,22 @@
+#include <bits/stdc+++.h>
+
+int main(){
+    int n,Sp=0,Ss=0,diff=0; 
+    cin>>n;
+    int a[n][n];
+    for(int a_i = 0; a_i < n; a_i++){
+       for(int a_j = 0; a_j < n; a_j++){
+          cin>>a[a_i][a_j];
+       }
+    }
+    for (int i=0;i<n;i++)
+    {
+        Sp=Sp+a[i][i];
+        Ss=Ss+a[i][n-1-i];
+    }
+    diff=Sp-Ss;
+    if (diff<0)
+        diff=-1*diff;
+    cout<<diff<<endl;
+    return 0;
+}