How to use static to modify functions in C language

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1. A static function can only be seen in the file in which it is declared, and other files cannot refer to the function.

2. Different files can use static functions with the same name and do not affect each other.

3. Functions declared with static cannot be referenced by another file.

Example

/ * file1.c * / # include static void fun (void) {printf ("hello from fun.\ n");} int main (void) {fun (); fun1 (); return 0;} / * file2.c * / # include static void fun1 (void) {printf ("hello from static fun1.\ n") } / * output: error:file1.c: (.text + 0x20): for 'fun1' undefined reference collect2: error: ld returned 1 exit status*/, the above is about "how to modify functions with static in c language". I believe you all have some understanding. I hope the content shared by the editor will be helpful to you. If you want to know more about the relevant knowledge, please follow the industry information channel.