diff --git a/CLion/ExerciseBook/02.12/02.12.c b/CLion/ExerciseBook/02.12/02.12.c
index f4fe844..69a6f2a 100644
--- a/CLion/ExerciseBook/02.12/02.12.c
+++ b/CLion/ExerciseBook/02.12/02.12.c
@@ -41,7 +41,7 @@ int main(int argc, char* argv[]) {
     mark = Algo_2_12(A, B);
     if(mark < 0) {
         printf("==> A<B\n");
-    } else if(mark > 1) {
+    } else if(mark > 0) {
         printf("==> A>B\n");
     } else {
         printf("A==B\n");
diff --git a/Dev-C++/ExerciseBook/02.12/02.12.cpp b/Dev-C++/ExerciseBook/02.12/02.12.cpp
index bc988c7..25322c9 100644
--- a/Dev-C++/ExerciseBook/02.12/02.12.cpp
+++ b/Dev-C++/ExerciseBook/02.12/02.12.cpp
@@ -41,7 +41,7 @@ int main(int argc, char* argv[]) {
     mark = Algo_2_12(A, B);
     if(mark < 0) {
         printf("==> A<B\n");
-    } else if(mark > 1) {
+    } else if(mark > 0) {
         printf("==> A>B\n");
     } else {
         printf("A==B\n");
diff --git a/VisualC++/ExerciseBook/02.12/02.12.c b/VisualC++/ExerciseBook/02.12/02.12.c
index bc988c7..25322c9 100644
--- a/VisualC++/ExerciseBook/02.12/02.12.c
+++ b/VisualC++/ExerciseBook/02.12/02.12.c
@@ -41,7 +41,7 @@ int main(int argc, char* argv[]) {
     mark = Algo_2_12(A, B);
     if(mark < 0) {
         printf("==> A<B\n");
-    } else if(mark > 1) {
+    } else if(mark > 0) {
         printf("==> A>B\n");
     } else {
         printf("A==B\n");
diff --git a/VisualC++/ExerciseBook/ExerciseBook.sdf b/VisualC++/ExerciseBook/ExerciseBook.sdf
index d2b90af..e1d50eb 100644
Binary files a/VisualC++/ExerciseBook/ExerciseBook.sdf and b/VisualC++/ExerciseBook/ExerciseBook.sdf differ
diff --git a/VisualC++/ExerciseBook/ExerciseBook.suo b/VisualC++/ExerciseBook/ExerciseBook.suo
index 4d00d8f..2ba7b4f 100644
Binary files a/VisualC++/ExerciseBook/ExerciseBook.suo and b/VisualC++/ExerciseBook/ExerciseBook.suo differ