要求,如:开幕清屏;闭幕清屏;上清屏;下清屏;中清屏.为此,这里
用C语言编制了几个子
,用于
中时,既可达到清屏
目,有能增加屏幕艺术美观. 子及演示:#
<stdio.h>#
<dos.h>#
<conio.h>void goto_xy(
x, y);void dcls(
x1, x2, y1, y2);void bcls(
x1, x2, y1, y2);void kcls(
x1, x2, y1, y2);void recls(
x1, x2, y1, y2);void zcls(
x1, x2, y1, y2);void puta(void);
/*--------------演示
---------------------*/
{
puta
;getch
;dcls(0,4,0,79);
getch
;puta
;getch
;bcls(0,25,0,79);
getch
;puta
;getch
;zcls(0,25,0,79);
getch
;}
/*********center clear screen(中心清屏)***********/
void zcls(
x1, x2, y1, y2){
x00,y00,x0,y0,i,d;
((y2-y1)>(x2-x1)){d=(x2-x1)/2;
x0=(x1+x2)/2;
y0=y1+d;
y00=y2-d;
for(i=0;i<(d+1);i
)recls((x0-i),(x00+i),(y0-i),(y00+i));
delay(10);
}
{d=(y2-y1)/2;
y0=(y1+y2)/2;
x0=x1+d;
x00=x2-d;
for(i=0;i<d+1;i
)recls(x0-i,x00+i,y0-i,y00+i);
delay(10);
}
}
/************* clear rectangle side(矩形边清屏)***********************/
void recls(
x1, x2, y1, y2){
i,j;for(i=y1;i<y2;i
){goto_xy(x1,i);
putchar(\' \');
goto_xy(x2,i);
putchar(\' \');
delay(10);
}
for(j=x1;j<x2;j
){goto_xy(i,y1);
putchar(\' \');
goto_xy(j,y2);
putchar(\' \');
delay(10);
}
}
/******************open screen clear(开屏式清屏)*********************/
void kcls(
x1, x2, y1, y2){
t,s,i,j;t=s=(y1+y2)/2;
for(;t<=y2;t
,s--)for(j=x1;j<x2;j
){goto_xy(j,t);
putchar(\' \');
goto_xy(j,s);
putchar(\' \');
delay(10);
}
}
/*****************close screen clear*****闭幕式清屏*******************/
void bcls(
x1, x2, y1, y2){
t,s,j;t=y1;
s=y2;
for(t=y1;t<(y1+y2)/2;t
,s--)for(j=x1;j<x2;j
){goto_xy(j,t);
putchar(\' \');
goto_xy(j,s);
putchar(\' \');
delay(10);
}
}
/******************bottom screen clear(自下清屏)********************/
void dcls(
x1, x2, y1, y2){
t,s,j,i;t=s=(y1+y2)/2;
for(j=x2;j>x1;j--)
for(i=y1;i<y2;i
){goto_xy(j,i);
putchar(\' \');
delay(10);
}
}
/******************设置光标子
******************/void goto_xy(
x, y){
union REGS r;
r.h.ah=2;
r.h.dl=y;
r.h.dh=x;
r.h.bh=0;
86(0x10,&r,&r);}
/**********************在屏幕上打出
连串a字母用于演示******************/void puta(void)
{
i,j;for(i=0;i<24;i
){for(j=0;j<79;j
){goto_xy(i,j);
pr
f(\"a\");}
}
}
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