CG

//Rotation
#include<stdio.h>
#include<conio.h>
#include<graphics.h>
#include<math.h>

void main(){
  int gd=DETECT, r, gm, d, x1, y1, x2, y2, xn1, yn1, xn2, yn2;
    float ra, si, co;
    initgraph(&gd, &gm, "C:\\TURBOC3\\BGI");

    printf("Enter the value of X1 and Y1: ");
    scanf("%d %d", &x1, &y1);

    printf("Enter the value of X2 and Y2: ");
    scanf("%d %d", &x2, &y2);

    line(x1, y1, x2, y2);

    printf("Enter the degree of rotation: ");
    scanf("%d", &d);

    //Starting point would be same
    xn1 = x1;
    yn1 = y1;

    //Convert Degree into radian
    r = x2-x1;
    ra = 0.0175 * d;
    si = sin(ra);
    co = cos(ra);
    //second point
    xn2 = x1 + r*co + 1;
    yn2 = y1 + r*si + 1;

    line(xn1, yn1, xn2, yn2);

    getch();
closegraph();



}
//translation
//Transation
#include<stdio.h>
#include<conio.h>
#include<graphics.h>
#include<math.h>
void main(){
    int gd=DETECT,gm;
    int x1,y1,x2,y2,tx,ty,x3,y3,x4,y4;
    initgraph(&gd,&gm,"C:\\TurboC3\\BGI");

    printf("Enter the starting point of line segment:");
    scanf("%d %d",&x1,&y1);
     printf("Enter the ending point of line segment:");
    scanf("%d %d",&x2,&y2);
     printf("Enter translation distances tx,ty:\n");
     scanf("%d%d",&tx,&ty);

     setcolor(5);
      line(x1,y1,x2,y2);
      outtextxy(x2+2,y2+2,"Original line");
     x3=x1+tx;
      y3=y1+ty;
      x4=x2+tx;
      y4=y2+ty;
      setcolor(7);
      line(x3,y3,x4,y4);
    outtextxy(x4+2,y4+2,"Line after translation");

    getch();
}
//scalling
#include<stdio.h>
#include<conio.h>
#include<graphics.h>
#include<math.h>
void main(){
    int gd=DETECT,gm;
     float x1,y1,x2,y2,sx,sy,x3,y3,x4,y4;
      initgraph(&gd,&gm,"C:\\TurboC3\\BGI");

     printf("Enter the starting point coordinates:");
      scanf("%f %f",&x1,&y1);
      printf("Enter the ending point coordinates:");
      scanf("%f %f",&x2,&y2);
      printf("Enter scaling factors sx,sy:\n");
      scanf("%f%f",&sx,&sy);

     setcolor(5);
     line(x1,y1,x2,y2);
      outtextxy(x2+2,y2+2,"Original line");
     x3=x1*sx;
      y3=y1*sy;
      x4=x2*sx;
      y4=y2*sy;
      setcolor(7);
      line(x3,y3,x4,y4);
      outtextxy(x4+2,y4+2,"Line after scaling");
      getch();
}