bubble sort

perform bubble sort

@@ -0,0 +1,23 @@
+#include <bits/stdc++.h> 
+
+// function to return sum of elements 
+// in an array of size n 
+int sum(int arr[], int n) 
+{ 
+    int sum = 0; // initialize sum 
+
+    // Iterate through all elements  
+    // and add them to sum 
+    for (int i = 0; i < n; i++) 
+    sum += arr[i]; 
+
+    return sum; 
+} 
+
+int main() 
+{ 
+    int arr[] = {12, 3, 4, 15}; 
+    int n = sizeof(arr) / sizeof(arr[0]); 
+    printf("Sum of given array is %d", sum(arr, n)); 
+    return 0; 
+}