C/C++——С±à̸CÓïÑÔº¯ÊýÄÇЩÊÂ(25)
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1. setwritemodeº¯Êý
setwritemodeº¯ÊýµÄ¹¦ÄÜÊÇÉèÖÃͼÐη½Ê½Ï»ÏßµÄÊä³öģʽ£¬ÆäÓ÷¨Îª£ºvoid far setwritemode(int mode);³ÌÐòʵÀýÈçÏ£º
#include <graphics.h>
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
int main()
{
int gdriver = DETECT, gmode, errorcode;
int xmax, ymax;
initgraph(&gdriver, &gmode, "");
errorcode = graphresult();
if (errorcode != grOk)
{
printf("Graphics error: %s\n", grapherrormsg(errorcode));
printf("Press any key to halt:");
getch();
exit(1);
}
xmax = getmaxx();
ymax = getmaxy();
setwritemode(XOR_PUT);
line(0, 0, xmax, ymax);
getch();
line(0, 0, xmax, ymax);
getch();
setwritemode(COPY_PUT);
line(0, 0, xmax, ymax);
getch();
closegraph();
return 0;
}
2. signalº¯Êý
signalº¯ÊýµÄ¹¦ÄÜÊÇÉèÖÃijһÐźŵĶÔÓ¦¶¯×÷£¬ÆäÓ÷¨Îªint signal(int sig, sigfun fname);³ÌÐòʵÀý´úÂëÈçÏ£º
#pragma inline
#include <stdio.h>
#include <signal.h>
void Catcher(int sig, int type, int *reglist)
{
printf("Caught it!\n");
*(reglist + 8) = 3;
}
int main(void)
{
signal(SIGFPE, Catcher);
asm mov ax,07FFFH
asm in
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1.1= Óë ==
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while(c=''||c=='\t'||c=='\n')
c=getc(f);
c= ''||c=='\t'||c=='\n'
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if((filedesc==open(argv[i],0))<0)
error();
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#include <iostream.h>
#include <string.h>
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char *strReplace(char *str1,char *str2,char *str3);
void main() ......