/* */ /* Special Conformance Test 21.3.0.1: Verification of exit, atexit functions */ /* */ /* The tester should verify that the sequence of messages "return from */ /* function 1", "return from function 2", "return from function 3" are */ /* displayed on the screen, and that the {status} shell variable is set to */ /* 3 upon completion of the program. */ /* */ #include /******************************************************************************/ void F1 () { printf ("Return from function 1\n"); } /******************************************************************************/ void F2 () { printf ("Return from function 2\n"); } /******************************************************************************/ void F3 () { printf ("Return from function 3\n"); } /******************************************************************************/ main () { int i; i = atexit (F3); if (i != 0) goto Fail; i = atexit (F2); if (i != 0) goto Fail; i = atexit (F1); if (i != 0) goto Fail; exit (3); Fail: printf ("Failure of atexit function in Special Conformance Test 21.3.0.1\n"); }