diff --git a/DeitelC/Chapter3/Crypted.c b/DeitelC/Chapter3/Crypted.c
index 1c7dec1..c8938ca 100644
--- a/DeitelC/Chapter3/Crypted.c
+++ b/DeitelC/Chapter3/Crypted.c
@@ -3,11 +3,14 @@
 int main (void) {
 int i = 0, final = 0, mult = 1;
 puts("Enter 4 digit integer:");
-scanf("%d", &i);
+int intC = scanf("%d", &i);
 
 if (i / 1000 >= 10) {
     puts("More than 4 digit");
     return 1;
+}else if (intC != 1) {
+    puts("Not an Integer!");
+    return 1;
 }
 
 while (i > 0) {
diff --git a/DeitelC/Chapter3/a.out b/DeitelC/Chapter3/a.out
index e4665ee..13a2696 100644
Binary files a/DeitelC/Chapter3/a.out and b/DeitelC/Chapter3/a.out differ