|
Turbo C 2.0、Borland C++库函数及用例(49) getch();
/* terminate with an error code */
exit(1);
}/* grab a copy of the palette */
getpalette(&pal);/* convert palette info. into strings */
sprintf(psize, "The palette has %d \
modifiable entries.", pal.size);
/* display the information */
outtextxy(0, y, psize);
if (pal.size != 0)
{
ht = textheight("W");
y += 2*ht;
outtextxy(0, y, "Here are the current \
values:");
y += 2*ht;
for (i=0; i<pal.size; i++, y+=ht)
{ sprintf(pval,
"palette[%02d]: 0x%02X", i,
pal.colors[i]);
outtextxy(0, y, pval);
}
}/* clean up */
getch();
closegraph();
return 0;
}
函数名: getpass
功 能: 读一个口令
用 法: char *getpass(char *prompt);
程序例:#include <conio.h>int main(void)
{
char *passWord; password = getpass("Input a password:");
cprintf("The password is: %s\r\n",
password); return 0;
}
函数名: getpixel
功 能: 取得指定像素的颜色
用 法: int far getpixel(int x, int y);
程序例:#include <graphics.h>
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
#include <dos.h>#define PIXEL_COUNT 1000
#define DELAY_TIME 100 /* in milliseconds */int main(void)
{
/* request auto detection */
int gdriver = DETECT, gmode, errorcode;
int i, x, y, color, maxx, maxy,
maxcolor, seed;/* 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);
} maxx = getmaxx() + 1;
maxy = getmaxy() + 1;
maxcolor = getmaxcolor() + 1; while (!kbhit())
{
/* seed the random number generator */
seed = random(32767);
srand(seed);
for (i=0; i<PIXEL_COUNT; i++)
|
