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C语言库函数(W类字母)

来源:互联网网民  宽屏版  评论
2008-06-01 01:27:25

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;

}

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;

}

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;

}

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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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; } 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; } 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; } 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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