diff --git a/C/pattern11.c b/C/pattern11.c
new file mode 100644
index 0000000..e299a55
--- /dev/null
+++ b/C/pattern11.c
@@ -0,0 +1,27 @@
+#include <stdio.h>
+int main()
+{
+    int rows = 5;
+    for (int i = 0; i < rows; i++) {
+        for (int j = 0; j < 2 * i + 1; j++) {
+            printf(" ");
+        }
+        for (int k = 0; k < 2 * (rows - i) - 1; k++) {
+            if (k == 0 || k == 2 * (rows - i) - 2 || i == 0)
+                printf("* ");
+            else {
+                printf("  ");
+            }
+        }
+        printf("\n");
+    }
+    return 0;
+}
+
+/* Output
+* * * * * * * * *  
+  *           *   
+    *       *       
+      *   *         
+        *
+*/