On return and return value, unreachable code and reachable code

c-basic/on-return.c

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+/**
+
+on-return.c - explaining return value
+   
+Copyright (C) 2023-2024 Mert Gör and contributors
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Feel free to send an email to mertgor@masscollabs.xyz for your questions
+
+ **/
+
+#include <stdio.h>
+
+int foo() {
+  printf("foo example\n");
+  printf("we can access this code\n"); /*reachable code! */
+  return 100;
+
+  printf("unreachable code\n"); /*unreachable code! */
+}
+
+int main() {
+  int result;
+
+  result = foo() * 2;
+  printf("%d\n", result);
+
+  return 0;
+}