Initial data commit

Task/Program-termination/C/program-termination-1.c

@@ -0,0 +1,18 @@
+#include <stdlib.h>
+/* More "natural" way of ending the program: finish all work and return
+   from main() */
+int main(int argc, char **argv)
+{
+  /* work work work */
+     ...
+  return 0;  /* the return value is the exit code. see below */
+}
+
+if(problem){
+  exit(exit_code);
+  /* On unix, exit code 0 indicates success, but other OSes may follow
+     different conventions.  It may be more portable to use symbols
+     EXIT_SUCCESS and EXIT_FAILURE; it all depends on what meaning
+     of codes are agreed upon.
+  */
+}

Task/Program-termination/C/program-termination-2.c

@@ -0,0 +1,5 @@
+#include <stdlib.h>
+
+if(problem){
+  abort();
+}

Task/Program-termination/C/program-termination-3.c

@@ -0,0 +1 @@
+exit_group();