diff --git a/chapters/fundamental_algorithms/euclidean_algorithm/euclidean.md b/chapters/fundamental_algorithms/euclidean_algorithm/euclidean.md
index 54be87366..8dce30b7b 100644
--- a/chapters/fundamental_algorithms/euclidean_algorithm/euclidean.md
+++ b/chapters/fundamental_algorithms/euclidean_algorithm/euclidean.md
@@ -114,3 +114,85 @@ int main(){
 }
 
 ```
+
+### C
+```c
+#include <stdio.h>
+#include <math.h>
+
+int euclid_mod(int a, int b){
+
+    int temp;
+    while (b != 0){
+        temp = b;
+        b = a%b;
+        a = temp;
+    }
+
+    return a;
+}
+
+int euclid_sub(int a, int b){
+
+    while (a != b){
+        if (a > b){
+            a = a - b;
+        }
+        else{
+            b = b - a;
+        }
+    }
+
+    return a;
+}
+
+int main(){
+
+    int check = euclid_mod(64*67, 64*81);
+    int check2 = euclid_sub(128*12, 128*77);
+
+    printf("%d\n", check);
+    printf("%d\n", check2);
+}
+
+```
+
+### JavaScript
+
+```html
+<!DOCTYPE html>
+<html>
+<body>
+<script>
+function euclid_mod(a, b){
+
+    var temp;
+    while (b != 0){
+        temp = b;
+        b = a%b;
+        a = temp;
+    }
+
+    return a;
+}
+
+function euclid_sub(a, b){
+
+    while (a != b){
+        if (a > b){
+            a = a - b;
+        }
+        else{
+            b = b - a;
+        }
+    }
+
+    return a;
+}
+
+document.write(euclid_mod(64*67, 64*81) + "<br>");
+document.write(euclid_sub(128*12, 128*77) + "<br>");
+</script>
+</body>
+</html>
+```
