关于C语言中Implicit declaration of function ‘XXXX’ is invalid in C99警告
C语言是过程化的编程语言，程序执行顺序是从上到下。java 若是在调用某函数的时候，函数在调用以前没有定义也没有声明，而是在调用以后定义，那么编译时Implicit declaration of function ‘XXXX’ is invalid in C99警告就产生了。这是有别于面向对象编程语言的地方。像java等这样作的时候是正常的，并不会产生任何问题。编程
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相关文章
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