diff --git a/du3/program.c b/du3/program.c
index fa93ac3..6f9d9e6 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -9,6 +9,7 @@ scanf("%s",str);
 int day=0;
 int m=0;
 int y=0;
+int z=0; 
 sscanf(str, "%d.%d.%d", &day, &m, &y);
 if(y%400==0 ||(y%100!=0 && y%4==0)){
     z++;