Converted everything to orgmode

converted everything to orgmode and added solution to the README files

Informatik_I/Exercise_5/Task_3/README.md

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-_This task is a text based task. You do not need to write any program/C++ file: the answer should be written in main.md (and might include code fragments if questions ask for them)._
-
-# Task:
-
-What are the problems (if any) with the following functions? Fix them and find appropriate [pre-](https://en.wikipedia.org/wiki/Precondition) and [postconditions](https://en.wikipedia.org/wiki/Postcondition).
-
-1. function is_even:
-
-```cpp
-
-bool is_even(int i) {
-    if (i % 2 == 0) return true;
-}
-```
-
-1. function invert:
-
-```cpp
-double invert(int x) {
-    double result;
-    if (x != 0) {
-        result = 1.0 / x;
-    }
-    return result;
-}
-```
-
-**Hint**: The C++ compiler does not protect you from certain types of errors. Therefore, even if you run a program in Code Expert, it is not guaranteed that the behaviour you observe is the “real” one. We have prepared a [program tracing handout](https://lec.inf.ethz.ch/ifmp/2023/guides/tracing/intro.html) that shows how to execute a program with a pen and paper and which conditions indicate bugs in the executed program not caught by the C++ compiler.

Informatik_I/Exercise_5/Task_3/README.org

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+#+TITLE: Fixing Functions
+
+/This task is a text based task. You do not need to write any program/C++ file: the answer should be written in main.md (and might include code fragments if questions ask for them)./
+
+* Task:
+
+What are the problems (if any) with the following functions? Fix them and find appropriate [[https://en.wikipedia.org/wiki/Precondition][pre-]] and [[https://en.wikipedia.org/wiki/Postcondition][postconditions]].
+
+1. function is_even:
+
+#+begin_src cpp
+bool is_even(int i) {
+    if (i % 2 == 0) return true;
+}
+#+end_src
+
+1. function invert:
+
+   #+begin_src cpp
+
+double invert(int x) {
+    double result;
+    if (x != 0) {
+        result = 1.0 / x;
+    }
+    return result;
+}
+   #+end_src
+
+**Hint**: The C++ compiler does not protect you from certain types of errors. Therefore, even if you run a program in Code Expert, it is not guaranteed that the behaviour you observe is the “real” one. We have prepared a [[https://lec.inf.ethz.ch/ifmp/2023/guides/tracing/intro.html][programming tracing handout]] that shows how to execute a program with a pen and paper and which conditions indicate bugs in the executed program not caught by the C++ compiler.
+
+* Solution
+
+#+begin_src markdown
+Please write your solution here.
+For your convenience we have added a template for your answers below.
+
+Note: Remember to also describe the problem of the function.
+
+# Function `c++|is_even`:
+
+The problem with this function is that it does not return a bool if the number `i` is uneven.
+
+```c++
+// PRE:  n/a
+// POST: returns true if i is even. If not it returns false.
+bool is_even(int i) {
+  if (i % 2 == 0) return true;
+  else return false;
+}
+```
+
+# Function `c++|invert`:
+
+The problem with this function is
+
+```c++
+// PRE: x is positive or negative but not zero.
+// POST: returns inverse with respect to multiplication of x.
+double invert(int x) {
+  // TODO: Fix code below.
+  if (x != 0) {
+      return 1.0 / x;
+  }
+  else
+    std::cout << "0 has no inverse!";
+}
+```
+
+#+end_src
+
+-----
+
+Made by JirR02 in Switzerland 🇨🇭

Informatik_I/Exercise_5/Task_3/main.md

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-Please write your solution here.
-For your convenience we have added a template for your answers below.
-
-Note: Remember to also describe the problem of the function.
-
-# Function `c++|is_even`:
-
-The problem with this function is that it does not return a bool if the number `i` is uneven.
-
-```c++
-// PRE:  n/a
-// POST: returns true if i is even. If not it returns false.
-bool is_even(int i) {
-  if (i % 2 == 0) return true;
-  else return false;
-}
-```
-
-# Function `c++|invert`:
-
-The problem with this function is
-
-```c++
-// PRE: x is positive or negative but not zero.
-// POST: returns inverse with respect to multiplication of x.
-double invert(int x) {
-  // TODO: Fix code below.
-  if (x != 0) {
-      return 1.0 / x;
-  }
-  else
-    std::cout << "0 has no inverse!";
-}
-```
-