diff --git a/def_loop.py b/def_loop.py
new file mode 100644
index 0000000..594f24c
--- /dev/null
+++ b/def_loop.py
@@ -0,0 +1,9 @@
+prices = [40, 30, 50]
+def adding(x):
+    to_pay = 0
+    for i in x:
+        to_pay += i
+    return to_pay     
+
+print(adding(prices))
+
diff --git a/func_loop.js b/func_loop.js
new file mode 100644
index 0000000..aa7cb2e
--- /dev/null
+++ b/func_loop.js
@@ -0,0 +1,10 @@
+let prices = [40,30,50];
+function adding(x) {
+    let to_pay = 0;
+    for (i of x) {
+        to_pay += i;
+    }
+    return to_pay;  
+}
+
+console.log(adding(prices))
diff --git a/func_sum.cpp b/func_sum.cpp
new file mode 100644
index 0000000..461437b
--- /dev/null
+++ b/func_sum.cpp
@@ -0,0 +1,19 @@
+#include <iostream>
+using namespace std;
+using std::cout;
+
+int prices[] = { 40, 30, 50 };
+
+int adding(int x[], int size) {
+    int to_pay = 0;
+    for (int i = 0; i < size; i++) {
+        to_pay += x[i];
+    }
+    return to_pay; 
+}
+
+int main() {
+    int result = adding(prices, sizeof(prices));
+    cout << result;
+    return 0;
+}
diff --git a/function.py b/function.py
new file mode 100644
index 0000000..95d9e0b
--- /dev/null
+++ b/function.py
@@ -0,0 +1,4 @@
+def main(x, y):
+    return x + y
+
+print(main(3, 2))
diff --git a/function_sum.cpp b/function_sum.cpp
new file mode 100644
index 0000000..7db0d5b
--- /dev/null
+++ b/function_sum.cpp
@@ -0,0 +1,12 @@
+#include<iostream>
+using namespace std;
+using std::cout;
+
+int sum(int x, int y) {
+  return x+y;
+}
+
+int main() {
+  cout << sum(3, 2);
+  return 0;
+}
diff --git a/function_sum.js b/function_sum.js
new file mode 100644
index 0000000..f63f98e
--- /dev/null
+++ b/function_sum.js
@@ -0,0 +1,5 @@
+function adding(x, y) {
+    return x + y;
+}
+let result = adding(3, 2);
+console.log(result);