C語(yǔ)言函數(shù)大全(w開頭)

函數(shù)名: wherex
    功 能: 返回窗口內(nèi)水平光標(biāo)位置
    用 法: int wherex(void);
    程序例:
    #include
    int main(void)
    {
    clrscr();
    gotoxy(10,10);
    cprintf("Current location is X: %d Y: %d\r\n", wherex(), wherey());
    getch();
    return 0;
    }
    函數(shù)名: wherey
    功 能: 返回窗口內(nèi)垂直光標(biāo)位置
    用 法: int wherey(void);
    程序例:
    #include
    int main(void)
    {
    clrscr();
    gotoxy(10,10);
    cprintf("Current location is X: %d Y: %d\r\n", wherex(), wherey());
    getch();
    return 0;
    }
    函數(shù)名: window
    功 能: 定義活動(dòng)文本模式窗口
    用 法: void window(int left, int top, int right, int bottom);
    程序例:
    #include
    int main(void)
    {
    window(10,10,40,11);
    textcolor(BLACK);
    textbackground(WHITE);
    cprintf("This is a test\r\n");
    return 0;
    }
    函數(shù)名: write
    功 能: 寫到一文件中
    用 法: int write(int handel, void *buf, int nbyte);
    程序例:
    #include
    #include
    #include
    #include
    #include
    #include
    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;
    }
    struct xfcb {
    char xfcb_flag; /* Contains 0xff to indicate xfcb */
    char xfcb_resv[5]; /* Reserved for DOS */
    char xfcb_attr; /* Search attribute */
    struct fcb xfcb_fcb; /* The standard fcb */
    };