Closes a file or stream #include <stdio.h> int fclose ( FILE *fp ); The fclose( ) function closes the file associated with a given FILE pointer, and releases the memory occupied by its I/O buffer. If the file was opened for writing, fclose( ) flushes the contents of the file buffer to the file. The fclose( ) function returns 0 on success. If fclose( ) fails, it returns the value EOF. Example/* Print a file to the console, line by line. */ FILE *fp_infile; char linebuffer[512]; if (( fp_infile=fopen("input.dat", "r")) == NULL ) { fprintf(stderr, "Couldn't open input file.\n"); return -1; } while ( fgets( linebuffer, sizeof(linebuffer), fp_infile )) != NULL ) fputs( linebuffer, stdout ); if ( ! feof(fp_infile) ) // This means "if not end of file" fprintf( stderr, "Error reading from input file.\n" ); if ( fclose(fp_infile) != 0 ) { fprintf(stderr, "Error closing input file.\n"); return -2; } See Alsofflush( ), fopen( ), setbuf( ) |