C语言函数大全P.doc

函数名: parsfnm功? 能: 分析文件名用? 法: char *parsfnm (char *cmdline, struct fcb *fcbptr, int option);程序例: #include process.h #include string.h#include stdio.h#include dos.h int main(void){?? char line[80];?? struct fcb blk; ?? /* get file name */?? printf(Enter drive and file name (no path - ie. a:file.dat)\n);?? gets(line); ?? /* put file name in fcb */?? if (parsfnm(line, blk, 1) == NULL)????? printf(Error in parsfm call\n);?? else????? printf(Drive #%d? Name: %11s\n, blk.fcb_drive, blk.fcb_name); ?? return 0;}?? 函数名: peek功? 能: 检查存储单元用? 法: int peek(int segment, unsigned offset);程序例: #include stdio.h#include conio.h#include dos.h int main(void){?? int value = 0; ?? printf(The current status of your keyboard is:\n);?? value = peek(0x0040, 0x0017);?? if (value 1)????? printf(Right shift on\n);?? else????? printf(Right shift off\n); ?? if (value 2)????? printf(Left shift on\n);?? else????? printf(Left shift off\n); ?? if (value 4)????? printf(Control key on\n);?? else????? printf(Control key off\n); ?? if (value 8)????? printf(Alt key on\n);?? else????? printf(Alt key off\n); ?? if (value 16)????? printf(Scroll lock on\n);?? else????? printf(Scroll lock off\n); ?? if (value 32)????? printf(Num lock on\n);?? else????? printf(Num lock off\n); ?? if (value 64)????? printf(Caps lock on\n);?? else????? printf(Caps lock off\n); ?? return 0;}?? 函数名: peekb功? 能: 检查存储单元用? 法: char peekb (int segment, unsigned offset);程序例: #include stdio.h#include conio.h#include dos.h int main(void){?? int value = 0; ?? printf(The current status of your keyboard is:\n);?? value = peekb(0x0040, 0x0017);?? if (value 1)????? printf(Right shift on\n);?? else????? printf(Right shift off\n); ?? if (value 2)????? printf(Left shift on\n);?? else????? printf(Left shift off\n); ?? if (value 4)????? printf(Control key on\n);?? else????? printf(Control key off\n); ?? if (value 8)????? printf(Alt key on\n);?? else????? printf(Alt key o