Fix build fail in demo_priority_queue.c

ZSShen / C-Common-Data-Structures

A fast and memory efficient C library to manipulate sequential containers, associative structures, and advanced string processing, such as tree map, hash map, and trie.

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Fix build fail in demo_priority_queue.c #16

Closed kentwelcome closed 9 years ago

kentwelcome commented 9 years ago

The main function should return integer value