How to use fclose function in C language

This article mainly introduces "how to use the fclose function in the c language". In the daily operation, I believe that many people have doubts about how to use the fclose function in the c language. The editor has consulted all kinds of materials and sorted out the simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about how to use the fclose function in the c language. Next, please follow the editor to study!

1. The C language fclose function is used to close files that have been successfully opened using fopen.

2. Fopen function and fclose function always appear in pairs. If the file successfully opens the fopen function, use the fclose function to close the file.

Example

# include # include int main () {/ / if D:/file.txt exists, fopen is opened successfully, otherwise failure returns NULL FILE * fp = fopen ("d://file.txt", "r"); if (! fp) printf ("file opening failed"); else {printf ("file opened successfully") Fclose (fp); / / if the file is opened successfully, remember to close} return (0);} at this point, the study on "how to use the fclose function in c language" is over, hoping to solve everyone's doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!