diff --git a/c/functions-in-c.c b/c/functions-in-c.c
index 627efa9..81c7b3a 100644
--- a/c/functions-in-c.c
+++ b/c/functions-in-c.c
@@ -1,25 +1,27 @@
-#include <stdio.h>
+#include <stdio.h>  //headerFile
+int max_of_four(int , int , int , int); //function declaration
 
-int max_of_four(int a, int b, int c, int d)
+int max_of_four(int a, int b, int c, int d) //function definition
 {
+    //body of function
     int res = a;
-    
+
     if (b > res)
         res = b;
     if (c > res)
         res = c;
     if (d > res)
         res = d;
-    
+
     return res;
 }
 
-
+//main function
 int main() {
-    int a, b, c, d;
-    scanf("%d %d %d %d", &a, &b, &c, &d);
-    int ans = max_of_four(a, b, c, d);
-    printf("%d", ans);
-    
+    int num_1, num_2, num_3, num_4;
+    printf("Enter FOUR numbers : ");
+    scanf("%d %d %d %d", &num_1, &num_2, &num_3, &num_4);
+    int answer = max_of_four(num_1, num_2, num_3, num_4);
+    printf("\nLargest Number is : %d", answer);
     return 0;
-}
\ No newline at end of file
+}
diff --git a/cpp/arrays-introduction.cpp b/cpp/arrays-introduction.cpp
index e9691ce..c1da5ea 100644
--- a/cpp/arrays-introduction.cpp
+++ b/cpp/arrays-introduction.cpp
@@ -7,12 +7,12 @@ using namespace std;
 
 
 int main() {
-    int N;
-    int array[1010];
-    cin >> N;
-    for (int i = N; i; i--)
-        cin >> array[i];
-    for (int i = 1; i <= N; i++)
-        cout << array[i] << " ";
+    int size;   //size variable for size of array
+    int array[1001];
+    cin >> size;
+    for (int index = size; index; index--)
+        cin >> array[index];
+    for (int index = 1; index <= size; index++)
+        cout << array[index] << " ";
     return 0;
 }