diff --git a/math/check_prime.cpp b/math/check_prime.cpp
index 1e1bd975a..a7b313551 100644
--- a/math/check_prime.cpp
+++ b/math/check_prime.cpp
@@ -7,12 +7,13 @@
  * @brief
  * Reduced all possibilities of a number which cannot be prime.
  * Eg: No even number, except 2 can be a prime number, hence we will increment
- * our loop with i+6 jumping and check for i or i+2 to be a factor of the number;
- * if it's a factor then we will return false otherwise true after the loop terminates at the terminating condition which is (i*i<=num)
+ * our loop with i+6 jumping and check for i or i+2 to be a factor of the
+ * number; if it's a factor then we will return false otherwise true after the
+ * loop terminates at the terminating condition which is (i*i<=num)
  */
 
-#include <cassert>    /// for assert
-#include <iostream>   /// for IO operations
+#include <cassert>   /// for assert
+#include <iostream>  /// for IO operations
 
 /**
  * Function to check if the given number is prime or not.
@@ -24,14 +25,13 @@ bool is_prime(T num) {
     bool result = true;
     if (num <= 1) {
         return false;
-    } else if (num == 2 || num==3) {
+    } else if (num == 2 || num == 3) {
         return true;
-    } else if ((num%2) == 0 || num%3 == 0) {
+    } else if ((num % 2) == 0 || num % 3 == 0) {
         return false;
-    }
-    else {
+    } else {
         for (T i = 5; (i * i) <= (num); i = (i + 6)) {
-            if ((num % i) == 0 || (num%(i+2)==0 )) {
+            if ((num % i) == 0 || (num % (i + 2) == 0)) {
                 result = false;
                 break;
             }
diff --git a/operations_on_datastructures/union_of_two_arrays.cpp b/operations_on_datastructures/union_of_two_arrays.cpp
index 45433379e..d2a621440 100644
--- a/operations_on_datastructures/union_of_two_arrays.cpp
+++ b/operations_on_datastructures/union_of_two_arrays.cpp
@@ -28,7 +28,7 @@ namespace operations_on_datastructures {
  * @returns void
  */
 void print(const std::vector<int32_t> &array) {
-    for (int64_t i : array) {
+    for (int32_t i : array) {
         std::cout << i << " ";  /// Print each value in the array
     }
     std::cout << "\n";  /// Print newline