How to use fclose function in C language

This article focuses on "how to use the fclose function in C language". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to use the fclose function in C language.

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);} so far, I believe you have a deeper understanding of "how to use the fclose function in C language". You might as well do it in practice! Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!