C/C++——С±à̸CÓïÑÔº¯ÊýÄÇЩÊÂ(10)
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1. initgraphº¯Êý
initgraphº¯ÊýÊdzõʼ»¯Í¼ÐÎϵͳ£¬ÆäÓ÷¨Îª£ºvoid far initgraph(int far *graphdriver, int far *graphmode,char far *pathtodriver); ³ÌÐòÀý×ÓÈçÏ£º
include <graphics.h>
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
int main(void)
{
int gdriver = DETECT, gmode, errorcode;
initgraph(&gdriver, &gmode, "");
errorcode = graphresult();
if (errorcode != grOk) {
printf("Graphics error: %s\n", grapherrormsg(errorcode));
printf("Press any key to halt:");
getch();
exit(1);
}
line(0, 0, getmaxx(), getmaxy());
getch();
closegraph();
return 0;
}
2. intdosº¯Êý
intdosº¯ÊýÊÇͨÓÃDOS½Ó¿Ú£¬ÆäÓ÷¨Îª£ºint intdos(union REGS *inregs, union REGS *outregs); ³ÌÐòÀý×ÓÈçÏ£º
#include <stdio.h>
#include <dos.h>
/* deletes file name; returns 0 on success, nonzero on failure */
int delete_file(char near *filename)
{
union REGS regs;
int ret;
regs.h.ah = 0x41; /* delete file */
regs.x.dx = (unsigned) filename;
ret = intdos(®s, ®s);
/* if carry flag is set, there was an error */
return(regs.x.cflag ? ret : 0);
}
int main(void)
{
int err;
err = delete_file("NOTEXIST.$$$");
if (!err)
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1. fcloseº¯Êý
fcloseº¯ÊýµÄ¹¦ÄÜÊǹرÕÒ»¸öÁ÷£¬ÆäÓ÷¨ÊÇ£ºint fclose(FILE *stream); ³ÌÐòÀý×ÓÈçÏ£º
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1. fgetcº¯Êý
fgetcº¯ÊýµÄ¹¦ÄÜÊÇ´ÓÁ÷ÖжÁÈ¡×Ö·û£¬ÆäÓ÷¨ÊÇ£ºint fgetc(FILE *stream); ³ÌÐòÀý×ÓÈçÏ£º
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1. harderrº¯Êý
harderrº¯ÊýµÄ¹¦ÄÜÊǽ¨Á¢Ò»¸öÓ²¼þ´íÎó´¦Àí³ÌÐò£¬ÆäÓ÷¨ÊÇ£ºvoid harderr(int (*fptr)());³ÌÐòÀý×ÓÈçÏ£º
#include <stdio.h>
......