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15 lines
599 B
C
15 lines
599 B
C
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// This is called an include guard, which ensures that the header is only
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// included once. You could alternatively use '#pragma once'. See
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// https://en.wikipedia.org/wiki/Include_guard.
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#ifndef HELLO_WORLD_H
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#define HELLO_WORLD_H
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// Declare the 'hello()' function, which takes no arguments and returns a
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// 'const char *', i.e. a pointer to a character (in this case the first
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// character in a string). The function itself is defined in the hello_world.c
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// source file. This function is called by the test case(s) in the test source
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// file test_hello_world.c.
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const char *hello(void);
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#endif
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