Implicit declaration of function printf is invalid in c99
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- Implicit declaration of function 'f' is invalid in c99 -werror -wimplicit-function-declaration
- Implicit declaration of function 'fork' is invalid in c99 -werror -wimplicit-function-declaration
- Implicit declaration of function is invalid in c99 -werror -wimplicit-function-declaration
- Implicit declaration of functionis invalid in c99
- Implicit declaration of function is invalid in c99 -wimplicit-function-declaration