C|implicit declaration of function ‘malloc’的解决方法 C|linux

You need to add:

#include

【C|implicit declaration of function ‘malloc’的解决方法】 This file includes the declaration for the built-in function malloc. If you don't do that, the compiler thinks you want to define your own function named malloc and it warns you because:

You don't explicitly declare it and
There already is a built-in function by that name which has a different signature than the one that was implicitly declared (when a function is declared implicitly, its return and argument types are assumed to be int, which isn't compatible with the built-in malloc, which takes a size_t and returns a void*).

C|implicit declaration of function ‘malloc’的解决方法

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