C fclose

C fclose() function is a C library function that releases the memory stream opened by the fopen() function. This tutorial guides you on how to use the fclose() function in the C program. The basic format of the fclose is:

Syntax:

int fclose( FILE * stream );

Return Value

The C close() function returns EOF in case of failure and returns 0 on success.

Example:

#include<stdio.h>

int main()
{
    FILE *fp;
    fp = fopen("fileName.txt","w");
    fprintf(fp, "%s", "Sample Texts");
    fclose(fp);
    return 0; 
}

Explanation:

• The above example will create a file called fileName.txt.
• The w means that the file is being opened for writing, and if the file does not exist, then the new file will be created.
• The fprintf() function writes Sample Texts text to the file.
• The fclose() function closes the file and releases the memory stream.