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  1. #include<stdio.h>
  2. #include<conio.h>
  3. #include<graphics.h>
  4. #include<process.h>
  5.  
  6. int drawhouse(float hx[],float hy[])
  7. {  int i;
  8.    int cx=getmaxx()/2;
  9.    int cy=getmaxy()/2;
  10.    for(i=0;i<4;i++)
  11.        line(cx+hx[i],cy-hy[i],cx+hx[i+1],cy-hy[i+1]);
  12.    line(cx+hx[4],cy-hy[4],cx+hx[0],cy-hy[0]);
  13. }
  14. void initscreen(float hx[],float hy[])
  15. {  line(0,getmaxy()/2,getmaxx(),getmaxy()/2);
  16.    line(getmaxx()/2,0,getmaxx()/2,getmaxy());
  17.    drawhouse(hx,hy);
  18. }
  19.  
  20. void main()
  21. {       int gd=DETECT,gm,ch,i,px,py,lx1,lx2,ly1,ly2;
  22.    float sx,sy,mx,my,x,y,m,c,thx[5],thy[5];
  23.    float hx[]={40.0,10.0,10.0,70.0,70.0};
  24.    float hy[]={80.0,50.0,10.0,10.0,50.0};
  25.    initgraph(&gd,&gm,"c:\tc");
  26.    initscreen(hx,hy);
  27.    do
  28.    {    printf("\nEnter the choice from below");
  29.        printf("\n1.Scale wrt 0,0");
  30.        printf("\n2.Scale wrt arb pt");
  31.        printf("\n3.reflect abt pt");
  32.        printf("\n4.exit");
  33.        scanf("%d",&ch);
  34.        switch(ch)
  35.        {    case 1: cleardevice();
  36.                initscreen(hx,hy);
  37.                for(i=0;i<=4;i++)
  38.                {    thx[i]=hx[i];
  39.                    thy[i]=hy[i];
  40.                }
  41.                printf("\nEnter the scale value of x and y axis");
  42.                scanf("%f%f",&sx,&sy);
  43.                for(i=0;i<=4;i++)
  44.                {       thx[i]=thx[i]*sx;
  45.                    thy[i]=thy[i]*sy;
  46.                }
  47.                drawhouse(thx,thy);
  48.                break;
  49.  
  50.            case 2: cleardevice();
  51.                initscreen(hx,hy);
  52.                for(i=0;i<=4;i++)
  53.                {    thx[i]=hx[i];
  54.                    thy[i]=hy[i];
  55.                }
  56.                printf("\nEnter the ref point");
  57.                scanf("%d%d",&px,&py);
  58.                printf("\nEnter the scale value of x and y axis");
  59.                scanf("%f%f",&sx,&sy);
  60.                for(i=0;i<=4;i++)
  61.                {       thx[i]-=px;
  62.                    thy[i]-=py;
  63.                }
  64.                for(i=0;i<=4;i++)
  65.                {       thx[i]=thx[i]*sx;
  66.                    thy[i]=thy[i]*sy;
  67.                }
  68.                for(i=0;i<=4;i++)
  69.                {       thx[i]+=px;
  70.                    thy[i]+=py;
  71.                }
  72.                drawhouse(thx,thy);
  73.                break;
  74.  
  75.            case 3: cleardevice();
  76.                initscreen(hx,hy);
  77.                printf("\nEnter the line with m amd c value");
  78.                scanf("%f%f",&m,&c);
  79.                if(m>0||m<0)
  80.                {    lx1=0;
  81.                    ly1=c;
  82.                    lx2=(getmaxy()-c)/m;
  83.                    ly2=getmaxy();
  84.                }
  85.                if(m==0)
  86.                {       lx1=0;
  87.                    ly1=c;
  88.                    lx2=getmaxx();
  89.                    ly2=c;
  90.                }
  91.                if(m>=9999)
  92.                {       lx1=lx2=c;
  93.                    ly1=0;
  94.                    ly2=getmaxy();
  95.                }
  96.                for(i=0;i<=4;i++)
  97.                {       thx[i]=hx[i];
  98.                    thy[i]=hy[i];
  99.                }
  100.                for(i=0;i<=4;i++)
  101.                {       x=thx[i];
  102.                    y=thy[i];
  103.                    if(m==0)
  104.                    {       thx[i]=x;
  105.                        thy[i]=c+(c-y);
  106.                    }
  107.                    if(m>0||m<0)
  108.                    {       thx[i]=2*((m*m*y+x)-c*m*m)/((1+m*m)*m)-x;
  109.                        thy[i]=2*(c+m*m*y+x)/(1+m*m)-y;
  110.                    }
  111.                    if(m>=9999)
  112.                    {       thy[i]=y;
  113.                        thx[i]=c+(c-x);
  114.                    }
  115.                }
  116.                drawhouse(thx,thy);
  117.  
  118. line(getmaxx()/2+lx1,getmaxy()/2-ly1,getmaxx()/2+lx2,getmaxy()/2-ly2);
  119.                break;
  120.  
  121.                case 4: exit(1);
  122.            }
  123.        }while(ch!=4);
  124. }
  125.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
Translating:
prog.icn:
File prog.icn; Line 6 # "int": invalid declaration
1 error
stdout
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Standard output is empty
https://ideone.com/ObJtK
language:
Icon (iconc 9.5.1)
created:
14 years ago
visibility:
public

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