diff --git a/program b/program
new file mode 100755
index 0000000..ee31e67
Binary files /dev/null and b/program differ
diff --git a/program.c b/program.c
index 10b654f..817bd72 100644
--- a/program.c
+++ b/program.c
@@ -1,13 +1,16 @@
 #include <stdio.h>
 #include <time.h>
 
-int main(){
-	//int day = 0;
-	//int mounth = 0;
-	//int year = 0;
-	//scanf("%d.%d.%d", &day, &mounth, &year);
-	time_t time;
-	scanf("%e.%m.%Y", &time);
-	printf("%e.%m.%Y", time);
-	return 0;
+int main()
+{        
+    /* initialize */
+    int y=0, m=0, d=0;    
+    fgets("%d.%d.%d", &d, &m, &y);
+    struct tm t = { .tm_year=y-1900, .tm_mon=m-1, .tm_mday=d };
+    /* modify */
+    t.tm_mday += 40;
+    mktime(&t);
+    /* show result */
+    printf("%s", asctime(&t)); /* prints: Sun Mar 16 00:00:00 1980 */
+    return 0;
 }