diff --git a/pr3.cpp b/pr3.cpp
index 674ad19..e266b49 100644
--- a/pr3.cpp
+++ b/pr3.cpp
@@ -21,7 +21,7 @@ int main()
         if(c==4)
         {
 
-            if((ar[0]==ar[1])&&(ar[2]==ar[3]))
+            if((ar[0]^ar[1] == 0)&&(ar[2] ^ ar[3] == 0))
             {
                 cout<<"Number is: "<<m;
                 break;
diff --git a/pr4.cpp b/pr4.cpp
index 9c78414..48ea078 100644
--- a/pr4.cpp
+++ b/pr4.cpp
@@ -10,7 +10,7 @@ int fact(int num)
 int main()
 {
     int n;
-    cout<<"Enter the number"<<endl;
+    cout<<"Enter a number"<<endl;
     cin>>n;
     int fa=fact(n);
     cout<<fa;