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+{{keywords>wiki library source code example reference}}
+====== atexit ======
+<code c>
+    #include <stdlib.h>
+    int atexit(void (*func)(void));
+ </code>
+===== Description =====
+<code c>
+       The atexit function registers the given function to be called at normal
+       process termination
+       atexit returns the value 0 if successful, otherwise it returns
+       a nonzero value.
+</code>
+===== C Sourcecode Example =====
+<code c>
+#include <stdio.h> /* including standard library */
+//#include <windows.h> /* uncomment this for Windows */
+#include <stdlib.h>
+void ExitMessage( void )
+{
+  printf("atexit was called, this is the exit message\n");
+}
+int main( void )
+{
+  atexit(ExitMessage);
+  printf("The ExitMessage will shown after this line\n");
+  return 0;
+}
+</code>
+==== output ====
+    user@host:~/code-reference.com#  ./atexit
+    The ExitMessage will shown after this line
+    atexit was called, this is the exit message

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