diff --git a/cv1/program.c b/cv1/program.c
index 25296b2..544e001 100644
--- a/cv1/program.c
+++ b/cv1/program.c
@@ -1,7 +1,70 @@
-#include <stdlib.h>
+#include <stdio.h>
+#include <ctype.h>
+
+//                                     i
+void change(char* s)  /// " ksdjfghkh  \0"
+{        
+    char shifer[85]="oizeasbtbq";
+    //               012 
+    for(int i = 0;    s[i]!='\0';      i++)
+          //        умова виконання
+    {
+        //printf("%d ",i);
+        s[i]=tolower(s[i]);
+        if(s[i] >='0' && s[i]<='9')
+        {                   // '0'=>текс 
+           
+           printf("\n%c ",s[i]);
+           s[i]=shifer[s[i]-'0'];
+           printf("\n%c >  ",s[i]);
+
+        }        
+    }
+}
+
+
+// char  x=69;    //    'E  => 'e'
+
+//     .
+// ABCDEFGH
+// 01234
+
+// if (s[i]== 'A') s[i]= 'a';
+
+// x-'A' + 'a'    'R' => 'r'
+//   65    97
+//     s[i]=shifer[s[i]-'0']
+
+//     i => s[i]  =>    
+//     5     '2'    z
+
+//     6 =>  s[6]='0' => 0 => shifr[0] => o
+//     0 =>  s[0]='8' => 8 => shifr[8] => b
+//    11 => s[11]='1' => 1 => shifr[1] => i
+
+//                      i
+//nazva   s: 8ryNd20va P1zza
+//           0123456789011 
+
+int main()
+{ //                        
+     //   char shifer[85]="oizeasbtbq";
+    char r[99]="8ryNd20va P1zza";
+    char br[99]; 
+
+    scanf("%s", br);   //jabl
+
+  //  do
+//    {
+   //     punk cena;
+  //      change(punkt);
+  //  }
+
+    printf("\n%s", r);
+    change(r);
+    printf("\n%s", r);
+	return 0;
+}
+
+
 
-int main(){
-    printf("Hello World!!!!\n");
-    printf("Dima is the best friend adn Lena is his gourgeus girlfriend!\n");
-    return 0;
-}
\ No newline at end of file