diff --git a/.drone.yml b/.drone.yml
index 4910f41..2e58648 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -37,6 +37,18 @@ steps:
     - success
     - failure
 
+- name: valgrind-test2
+  pull: if-not-exists
+  image: immawanderer/archlinux-cdev
+  commands:
+  - valgrind --log-file=valgrind_output ./pjc-0x02 < ./test_input2 > /dev/null
+  - cat valgrind_output
+  - grep "no leaks are possible" valgrind_output
+  when:
+    status:
+    - success
+    - failure
+
 
 ---
 kind: pipeline
diff --git a/main.c b/main.c
index d0db230..bb9e471 100644
--- a/main.c
+++ b/main.c
@@ -32,8 +32,10 @@ int get_userguess(){
     while( ok != 1){
         ok = scanf("%d", &x);
         if(ok == EOF){
-            printf("[*] please, come on...\n");
-            return 9000;
+            printf("\ncaught Ctrl+D...\n");
+            ok = 1;
+            x = 2;
+            break;
         }
         if(ok == 0){
             while (fgetc(stdin) != '\n'){
@@ -45,6 +47,24 @@ int get_userguess(){
     return x;
 }
 
+void read_selection(int selection){
+    int ok;
+    while(ok != 1) {
+        ok = scanf("%d", &selection);
+        if(ok == EOF){
+            printf("[*] please, come on...\n");
+            ok = 1;
+            lemmego();
+        }
+        if(ok == 0){
+            while (fgetc(stdin) != '\n'){
+            }
+            lemmego();
+            return;
+        }
+    }
+}
+
 void compare_guess_with_reality(int userguess, int reality){
     if(userguess == reality){
         printf("[*] you won because you've got luck. try me next time!\n");
@@ -74,7 +94,8 @@ void guess(){
             ok = scanf("%d", &userchoice);
             if(ok == EOF){
                 printf("[*] please, come on...\n");
-                return;
+                lemmego();
+                break;
             }
             if(ok == 0){
                 while (fgetc(stdin) != '\n'){
@@ -128,23 +149,6 @@ void print_rand_bs(){
     }
 }
 
-void read_selection(int selection){
-    int ok;
-    while(ok != 1) {
-        ok = scanf("%d", &selection);
-        if(ok == EOF){
-            printf("[*] please, come on...\n");
-            return;
-        }
-        if(ok == 0){
-            while (fgetc(stdin) != '\n'){
-            }
-            lemmego();
-            return;
-        }
-    }
-}
-
 
 void default_flow(char operator, int a, int b, int result){
     int answer = 0;
@@ -232,11 +236,78 @@ void another_bs(){
     }
 }
 
+void print_some_multiples_of_five(){
+    for (int i = 1; i <= 20; ++i) {
+        printf("i = %d\n", i*5);
+    }
+}
+
+void gimme_leap_years(){
+    int former, latter, selection;
+
+    printf("\ncalculate leap years for a given range\n");
+    while ( selection != 2 ) {
+        printf("\n1 - calculate\n"
+               "2 - quit\n"
+               ">> ");
+        selection = 0;
+        selection = get_userguess();
+
+        switch (selection) {
+            case 1:
+                printf("the former year\n>> ");
+                former = get_userguess();
+                printf("the latter year\n>> ");
+
+                latter = get_userguess();
+                if (former > latter) {
+                    int tmp = latter;
+                    latter = former;
+                    former = tmp;
+                }
+
+                for (int i = former; i <= latter; ++i) {
+                    int year = i;
+                    if (year % 4 == 0) {
+                        if (year % 100 == 0) {
+                            if (year % 400 == 0) {
+                                printf("year %d is a leap year\n", year);
+                                continue;
+                            } else {
+                                printf("year %d is NOT a leap year\n", year);
+                                continue;
+                            }
+                            printf("year %d is NOT a leap year\n", year);
+                            continue;
+                        }
+                        printf("year %d is a leap year\n", year);
+                        continue;
+                    } else {
+                        printf("year %d is NOT a leap year\n", year);
+                        continue;
+                    }
+                }
+                printf("range %d..%d (%d years)\n", former, latter, latter - former);
+                break;
+            case 2:
+                lemmego();
+                return;
+                break;
+            default:
+                printf("invalid option\n");
+                selection = 0;
+                break;
+        }
+    }
+}
+
 
 int main(int argc, char *argv[])
 {
     print_rand_bs();
     guess();
     another_bs();
+    print_some_multiples_of_five();
+    gimme_leap_years();
     return 0;
 }
diff --git a/test_input2 b/test_input2
new file mode 100644
index 0000000..904c795
--- /dev/null
+++ b/test_input2
@@ -0,0 +1,16 @@
+1
+2
+2020
+1
+500
+5
+1
+bs
+ok1
+1910
+1969
+1
+2005
+2505
+ktxbai
+2