|
Turbo C 2.0、Borland C++库函数及用例(37) getch();
closegraph();
return 0;
}
函数名: getbkcolor
功 能: 返回当前背景颜色
用 法: int far getbkcolor(void);
程序例:#include <graphics.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <conio.h>int main(void)
{ /* request auto detection */
int gdriver = DETECT, gmode, errorcode;
int bkcolor, midx, midy;
char bkname[35];/* initialize graphics and local variables */
initgraph(&gdriver, &gmode, "");/* read result of initialization */
errorcode = graphresult();
/* an error occurred */
if (errorcode != grOk)
{ printf("Graphics error: %s\n",
grapherrormsg(errorcode));
printf("Press any key to halt:");
getch();
/* terminate with an error code */
exit(1);
} midx = getmaxx() / 2;
midy = getmaxy() / 2;
setcolor(getmaxcolor());/* for centering text on the display */
settextjustify(CENTER_TEXT, CENTER_TEXT);/* get the current background color */
bkcolor = getbkcolor();/* convert color value into a string */
itoa(bkcolor, bkname, 10);
strcat(bkname,"is the current background color.");/* display a message */
outtextxy(midx, midy, bkname);/* clean up */
getch();
closegraph();
return 0;
}
函数名: getc
功 能: 从流中取字符
用 法: int getc(FILE *stream);
程序例:#include <stdio.h>int main(void)
{
char ch; printf("Input a character:");
/* read a character from the
standard input stream */ ch = getc(stdin);
printf("The character input was: '%c'\n",
ch);
return 0;
}
函数名: getcbrk
功 能: 获取Control_break设置
用 法: int getcbrk(void);
程序例:#include <stdio.h>
#include <dos.h>int main(void)
{
if (getcbrk())
printf("Cntrl-brk flag is on\n");
else
printf("Cntrl-brk flag is off\n"); return 0;
}
函数名: getch
功 能: 从控制台无回显地取一个字符
用 法: int getch(void);
程序例:#include <stdio.h>
#include <conio.h>int main(void)
{
char ch; printf("Input a character:");
ch = getche(); printf("\nYou input a '%c'\n", ch);
|
