函数名:?wherex?

功??能:?返回窗口内水平光标位置?

用??法:?int?wherex(void);?

程序例:?

#include?<conio.h>?
int?main(void)?
{?
???clrscr();?
???gotoxy(10,10);?
???cprintf("Current?location?is?X:?%d??Y:?%d\r\n",?wherex(),?wherey());?
???getch();?
???return?0;?
}?
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函数名:?wherey?
功??能:?返回窗口内垂直光标位置?
用??法:?int?wherey(void);?
程序例:?
#include?<conio.h>?
int?main(void)?
{?
???clrscr();?
???gotoxy(10,10);?
???cprintf("Current?location?is?X:?%d??Y:?%d\r\n",?wherex(),?wherey());?
???getch();?
???return?0;?
}?
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函数名:?window?
功??能:?定义活动文本模式窗口?
用??法:?void?window(int?left,?int?top,?int?right,?int?bottom);?
程序例:?
#include?<conio.h>?
int?main(void)?
{?
???window(10,10,40,11);?
???textcolor(BLACK);?
???textbackground(WHITE);?
???cprintf("This?is?a?test\r\n");?
???return?0;?
}?
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函数名:?write?
功??能:?写到一文件中?
用??法:?int?write(int?handel,?void?*buf,?int?nbyte);?
程序例:?
#include?<stdio.h>?
#include?<stdlib.h>?
#include?<fcntl.h>?
#include?<sys\stat.h>?
#include?<io.h>?
#include?<string.h>?
int?main(void)?
{?
???int?handle;?
???char?string[40];?
???int?length,?res;?
???/*?
????Create?a?file?named?"TEST.$$$"?in?the?current?directory?and?write?
????a?string?to?it.??If?"TEST.$$$"?already?exists,?it?will?be?overwritten.?
???*/?
???if?((handle?=?open("TEST.$$$",?O_WRONLY?|?O_CREAT?|?O_TRUNC,?
?????????????????????????S_IREAD?|?S_IWRITE))?==?-1)?
???{?
??????printf("Error?opening?file.\n");?
??????exit(1);?
???}?
???strcpy(string,?"Hello,?world!\n");?
???length?=?strlen(string);?
???if?((res?=?write(handle,?string,?length))?!=?length)?
???{?
??????printf("Error?writing?to?the?file.\n");?
??????exit(1);?
???}?
???printf("Wrote?%d?bytes?to?the?file.\n",?res);?
???close(handle);?
???return?0;?
}?
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