求一个计算器程序设计）设计要求：编写一个程序,能在键盘上读入数据,并完成加.减.乘.除计算(2)设计内容：利用BIOS和

#include <dos。h> #include <math。h> #include <conio。h> #include <stdio。h> #include <stdlib。h> #include <stdarg。h> #include <graphics。h> #include <string。h> #include <ctype。h> #define UP 0x48 #define DOWN 0x50 #define LEFT 0x4b #define RIGHT 0x4d #define ENTER 0x0d void *rar; struct palettetype palette; int GraphDriver; int GraphMode; int ErrorCode; int MaxColors; int MaxX, MaxY; double AspectRatio; void drawboder(void); void initialize(void); void computer(void); void changetextstyle(int font, int direction, int charsize); void mwindow(char *header); int specialkey(void) ; int arrow(); int main(){initialize();computer(); closegraph();return(0); }void initialize(void){int xasp, yasp; GraphDriver = DETECT; initgraph( &GraphDriver, &GraphMode, "" );ErrorCode = graphresult(); if( ErrorCode != grOk ) {printf("Graphics System Error: %s\n",grapherrormsg( ErrorCode ) ); exit( 1 ); }getpalette( &palette ); MaxColors = getmaxcolor() + 1; MaxX = getmaxx(); MaxY = getmaxy(); getaspectratio( &xasp, &yasp ); AspectRatio = (double)xasp/(double)yasp;}void computer(void){struct viewporttype vp; int color, height, width;int x, y,x0,y0, i, j,v,m,n,act,flag=1;float num1=0,num2=0,result; char cnum[5],str2[20]=,c,temp[20]=;char str1[]="1230。456+-789*/Qc=^%";mwindow( "Calculator" ); color = 7; getviewsettings( &vp ); width=(vp。right+1)/10; height=(vp。bottom-10)/10 ; x = width /2; y = height/2; setfillstyle(SOLID_FILL, color+3);bar( x+width*2, y, x+7*width, y+height );setcolor( color+3 ); rectangle( x+width*2, y, x+7*width, y+height );setcolor(RED); outtextxy(x+3*width,y+height/2,"0。"); x =2*width-width/2; y =2*height+height/2; for( j=0 ; j<4 ; ++j ) {for( i=0 ; i<5 ; ++i ){setfillstyle(SOLID_FILL, color);setcolor(RED);bar( x, y, x+width, y+height ); rectangle( x, y, x+width, y+height );sprintf(str2,"%c",str1[j*5+i]);outtextxy( x+(width/2), y+height/2, str2);x =x+width+ (width / 2) ; }y +=(height/2)*3; x =2*width-width/2; }x0=2*width;y0=3*height;x=x0;y=y0;gotoxy(x,y); arrow(); putimage(x,y,rar,XOR_PUT);m=0;n=0;strcpy(str2,""); while((v=specialkey())!=45) {while((v=specialkey())!=ENTER) {putimage(x,y,rar,XOR_PUT); if(v==RIGHT) if(x>=x0+6*width){x=x0;m=0;}else{x=x+width+width/2;m++;} if(v==LEFT) if(x<=x0){x=x0+6*width;m=4;} else{x=x-width-width/2;m--;} if(v==UP) if(y<=y0){y=y0+4*height+height/2;n=3;} else{y=y-height-height/2;n--;} if(v==DOWN) if(y>=7*height){y=y0;n=0;} else{y=y+height+height/2;n++;} putimage(x,y,rar,XOR_PUT); }c=str1[n*5+m]; if(isdigit(c)||c=='。') {if(flag==-1) {strcpy(str2,"-"); flag=1;} sprintf(temp,"%c",c); strcat(str2,temp); setfillstyle(SOLID_FILL,color+3);bar(2*width+width/2,height/2,15*width/2,3*height/2);outtextxy(5*width,height,str2); }if(c=='+'){num1=atof(str2); strcpy(str2,""); act=1; setfillstyle(SOLID_FILL,color+3);bar(2*width+width/2,height/2,15*width/2,3*height/2);outtextxy(5*width,height,"0。"); }if(c=='-'){if(strcmp(str2,"")==0) flag=-1; else{num1=atof(str2); strcpy(str2,""); act=2; setfillstyle(SOLID_FILL,color+3);bar(2*width+width/2,height/2,15*width/2,3*height/2); outtextxy(5*width,height,"0。"); }}if(c=='*'){num1=atof(str2); strcpy(str2,""); act=3; setfillstyle(SOLID_FILL,color+3); bar(2*width+width/2,height/2,15*width/2,3*height/2);outtextxy(5*width,height,"0。"); }if(c=='/'){num1=atof(str2); strcpy(str2,""); act=4; setfillstyle(SOLID_FILL,color+3);bar(2*width+width/2,height/2,15*width/2,3*height/2);outtextxy(5*width,height,"0。"); }if(c=='^'){num1=atof(str2); strcpy(str2,""); act=5; setfillstyle(SOLID_FILL,color+3); bar(2*width+width/2,height/2,15*width/2,3*height/2); outtextxy(5*width,height,"0。"); }if(c=='%'){num1=atof(str2); strcpy(str2,""); act=6; setfillstyle(SOLID_FILL,color+3); bar(2*width+width/2,height/2,15*width/2,3*height/2); outtextxy(5*width,height,"0。"); }if(c=='='){num2=atof(str2); switch(act) {case 1:result=num1+num2;break; case 2:result=num1-num2;break; case 3:result=num1*num2;break; case 4:result=num1/num2;break; case 5:result=pow(num1,num2);break; case 6:result=fmod(num1,num2);break; }setfillstyle(SOLID_FILL,color+3); bar(2*width+width/2,height/2,15*width/2,3*height/2); sprintf(temp,"%f",result); outtextxy(5*width,height,temp); }if(c=='c'){num1=0; num2=0;flag=1;strcpy(str2,""); setfillstyle(SOLID_FILL,color+3); bar(2*width+width/2,height/2,15*width/2,3*height/2); outtextxy(5*width,height,"0。"); }if(c=='Q')exit(0); }putimage(x,y,rar,XOR_PUT); return; }void mwindow( char *header ){int height;cleardevice(); setcolor( MaxColors - 1 ); setviewport( 20, 20, MaxX/2, MaxY/2, 1 ); height = textheight( "H" ); settextstyle( DEFAULT_FONT, HORIZ_DIR, 1 );settextjustify( CENTER_TEXT, TOP_TEXT );outtextxy( MaxX/4, 2, header ); setviewport( 20,20+height+4, MaxX/2+4, MaxY/2+20, 1 ); drawboder(); }void drawboder(void) {struct viewporttype vp; setcolor( MaxColors - 1 ); setlinestyle( SOLID_LINE, 0, NORM_WIDTH );getviewsettings( &vp );rectangle( 0, 0, vp。right-vp。left, vp。bottom-vp。top ); }int arrow(){int size;int raw[]=; setfillstyle(SOLID_FILL,2); fillpoly(8,raw); size=imagesize(4,4,16,16); rar=malloc(size); getimage(4,4,16,16,rar); putimage(4,4,rar,XOR_PUT); return 0;}int specialkey(void){int key;while(bioskey(1)==0); key=bioskey(0); key=key&0xff? key&0xff:key>>8; return(key); }