diff --git a/Even Fibonacci numbers sum.c b/Even Fibonacci numbers sum.c
new file mode 100644
index 0000000..0069fe8
--- /dev/null
+++ b/Even Fibonacci numbers sum.c	
@@ -0,0 +1,29 @@
+/* Program to calculate sum of even fibonacci series numbers upto a limit (entered by user)
+ * fibonacci series for limit 13:
+ *                      1 1 2 3 5 8
+ * even sum = 2 + 8 = 10
+ * */
+
+#include <stdio.h>
+int main() {
+    int first=1, next=1, sum, limit;    
+    int evensum = 0;
+    
+    printf("Enter Limit: ");  
+    scanf("%d",&limit);
+    
+    while(true) {
+        //logic for generating fibonacci series
+        sum = first + next;
+        first = next;
+        next = sum;
+        
+        if(sum >= limit)
+            break;
+        
+        if(sum%2==0)
+            evensum += sum;
+    }
+    printf("Even sum = %d \n",evensum);
+    return 0;
+}
diff --git a/Even Fibonacci numbers.c b/Even Fibonacci numbers.c
deleted file mode 100644
index 97ddfb8..0000000
--- a/Even Fibonacci numbers.c	
+++ /dev/null
@@ -1,15 +0,0 @@
-int main() {
-    int x=1,y=2,sum,limit;    
-    int evensum=2;             
-    printf("Enter Limit: ");  
-    scanf("%d",&limit);
-    while( (x+y)<limit ) {
-        sum=x+y;
-        x=y;
-        y=sum;
-        if (sum%2==0)
-            evensum+=sum;
-    }
-    printf("%d \n",evensum);
-    return 0;
-}