va_end(argptr);
return(cnt);
}
int main(void)
{
int inumber = 30;
float fnumber = 90.0;
char string[4] = "abc";
vspf("%d %f %s", inumber, fnumber, string);
printf("%s ", buffer);
return 0;
}
函数名:
vsscanf
功 能: 从流中执行格式化输入
用 法: int vsscanf(char *s, char *format, va_list param);
程序例:
#include
#include
#include
char buffer[80] = "30 90.0 abc";
int vssf(char *fmt, ...)
{
va_list argptr;
int cnt;
fflush(stdin);
va_start(argptr, fmt);
cnt = vsscanf(buffer, fmt, argptr);
va_end(argptr);
return(cnt);
}
int main(void)
{
int inumber;
float fnumber;
char string[80];
vssf("%d %f %s", &inumber, &fnumber, string);
printf("%d %f %s ", inumber, fnumber, string);
return 0;
}
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
int main(void)
{
clrscr();
gotoxy(10,10);
cprintf("Current location is X: %d Y: %d ", 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
int main(void)
{
clrscr();
gotoxy(10,10);
cprintf("Current location is X: %d Y: %d ", 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
int main(void)
{
window(10,10,40,11);
textcolor(BLACK);
textbackground(WHITE);
cprintf("This is a test ");
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
#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. ");
exit(1);
}
strcpy(string, "Hello, world! ");
length = strlen(string);
if ((res = write(handle, string, length)) != length)
{
printf("Error writing to the file. ");
exit(1);
}
printf("Wrote %d bytes to the file. ", 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 */
};
函数名:
textmode
功 能: 将屏幕设置成文本模式
用 法: void textmode(int mode);
程序例:
#include
int main(void)
{
textmode(BW40);
cprintf("ABC");
getch();
textmode(C40);
cprintf("ABC");
getch();
textmode(BW80);
cprintf("ABC");
getch();
textmode(C80);
cprintf("ABC");
getch();
textmode(MONO);
cprintf("ABC");
getch();
return 0;
}
函数名:
textwidth
功 能: 返回
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