C/C++——С±à̸CÓïÑÔº¯ÊýÄÇЩÊÂ(11)
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1. kbhitº¯Êý
kbhitº¯ÊýÊǼì²éµ±Ç°°´Ïµļü£¬ÆäÓ÷¨Îª£ºint kbhit(void);³ÌÐòÀý×ÓÈçÏ£º
#include <conio.h>
int main(void)
{
cprintf("Press any key to continue:");
while (!kbhit()) /* do nothing */ ;
cprintf("\r\nA key was pressed...\r\n");
return 0;
}
2. keepº¯Êý
keepº¯ÊýÊÇÍ˳ö²¢¼ÌÐø×¤Áô£¬ÆäÓ÷¨Îª£ºvoid keep(int status, int size);³ÌÐòÀý×ÓÈçÏ£º
#include <dos.h>
#define INTR 0x1C
#define ATTR 0x7900
extern unsigned _heaplen = 1024;
extern unsigned _stklen = 512;
void interrupt ( *oldhandler)(void);
void interrupt handler(void)
{
unsigned int (far *screen)[80];
static int count;
screen = MK_FP(0xB800,0);
count++;
count %= 10;
screen[0][79] = count + '0' + ATTR;
oldhandler();
}
int main(void)
{
oldhandler = getvect(INTR);
setvect(INTR, handler);
keep(0, (_SS + (_SP/16) - _psp));
return 0;
}
3. lfindº¯Êý
Lfindº¯ÊýÊÇÖ´ÐÐÏßÐÔËÑË÷£¬ÆäÓ÷¨Îª£ºvoid *lfind(void *key, void *base, int *nelem, int width, int (*fcmp)()); ³ÌÐòÀý×ÓÈçÏ£º
#include <stdio.h>
#include <stdlib.h>
int compare(int *x, int *y)
{
return( *x - *y );
}
int main(void)
{
int array[5] = {35, 87, 46, 99, 12};
size_t nelem = 5;
int key;
int *result;
key = 99;
result = lfind(&key, array, &nelem,
sizeof(int), (int(*)(const void *,const void *))compare);
if (result)
printf("Number %d found\n",key);
else
printf("Number %d not found\n",key);
return 0;
}
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extern "C" {
#endif
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#ifdef __cplusplus
}
#endif
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1. initgraphº¯Êý
initgraphº¯ÊýÊdzõʼ»¯Í¼ÐÎϵͳ£¬ÆäÓ÷¨Îª£ºvoid far initgraph(int far *graphdriver, int far *graphmode,char far *pathtodriver); ³ÌÐòÀý×ÓÈçÏ£ ......