diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1d74e21
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.vscode/
diff --git a/Pointers.c b/Pointers.c
index 137773f..8063419 100644
--- a/Pointers.c
+++ b/Pointers.c
@@ -4,7 +4,7 @@
  * object.
  * A pointer in C is used to allocate memory dynamically i.e. at run time.
  */
-
+// int*ptr means it stores the address of another variable which is of type integer
 #include <stdio.h>
 
 int main(void) {
diff --git a/modifiedprime.c b/modifiedprime.c
new file mode 100644
index 0000000..fa18d75
--- /dev/null
+++ b/modifiedprime.c
@@ -0,0 +1,20 @@
+#include<stdio.h>
+int main(){
+    int n,count=0;
+    printf("enter a number:\n");
+    scanf("%d",&n);
+    int i=1;
+   while(i<=n){
+    if(n%i == 0){
+       count++;
+    }
+    i++;
+   }
+   if(count == 2){
+    printf("The number %d is a prime number\n",n);
+   }
+   else{
+    printf("\nThe number %d is not a prime number\n",n);
+   }
+    return 0;
+}
\ No newline at end of file