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typedef struct {
int level; /* fill/empty level of buffer */
unsigned flags; /* File status flags */
char fd; /* File descriptor */
unsigned char hold; /* Ungetc char if no buffer */
int bsize; /* Buffer size */
unsigned char _FAR *buffer; /* Data transfer buffer */
unsigned char _FAR *curp; /* Current active pointer */
unsigned istemp; /* Temporary file indicator */
short token; /* Used for validity checking */
} FILE; /* This is the FILE object */
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fopen() ´ò¿ªÁ÷
fclose() ¹Ø±ÕÁ÷
fputc() дһ¸ö×Ö·ûµ½Á÷ÖÐ
fgetc() ´ÓÁ÷ÖжÁÒ»¸ö×Ö·û
fseek() ÔÚÁ÷Öж¨Î»µ½Ö¸¶¨µÄ×Ö·û
fputs() д×Ö·û´®µ½Á÷
fgets() ´ÓÁ÷ÖжÁÒ»ÐлòÖ¸¶¨¸ö×Ö·û
fprintf() °´¸ñʽÊä³öµ½Á÷
fscanf() ´ÓÁ÷Öа´¸ñʽ¶ÁÈ¡
feof() µ½´ïÎļþβʱ·µ»ØÕæÖµ
ferror() ·¢Éú´íÎóʱ·µ»ØÆäÖµ
rewind() ¸´Î»Îļþ¶¨Î»Æ÷µ½Îļþ¿ªÊ¼´¦
remove() ɾ³ýÎļþ
fread() ´ÓÁ÷ÖжÁÖ¸¶¨¸öÊýµÄ×Ö·û
fwrite() ÏòÁ÷ÖÐдָ¶¨¸öÊýµÄ×Ö·û
tmpfile() Éú³ÉÒ»¸öÁÙʱÎļþÁ÷
tmpnam() Éú³ÉÒ»¸öΨһµÄÎļþÃû
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# include <stdio.h>
/* ºê¶¨Òå */
# define MAX 100
# define LEN 80
/* Ò»¸ö·Ç³£¼òµ¥µÄÎı¾±à¼Æ÷ */
int main()
{
char text[MAX][LEN]; // ¶¨Òå×Ö·ûÐÍÊý×é
register int t, i, j; /* ¶¨ÒåÈý¸ö¼Ä´æÆ÷±äÁ¿ */
  ......
mysql ½Øȡijһ¸öʱ¼ä(datetimeÀàÐÍ)µÄÈÕÆÚ£º
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·½·¨2£ºselect left(row_name, 10) from table_name where row = row1;
·½·¨3£ºselect cast(row_name as char[10]) from table_name where row = row1;
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Answer to Exercise 1-7
Write a program to print the value of EOF .
#include <stdio.h>
int main(void)
{
printf("The value of EOF is %d\n\n", EOF);
return 0 ......
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