Computer Graphics and Virtual Reality Program implemented in C

Circle with Radius 50mm, centre A(10,10) is to be Converted into
the Ellipse with Major axis 90mm and Minor axis 60mm. Find the total transformation.

Note:-

This a computer graphics  2D transformation program, in this program you have to find:-

1) Translation Matrix
2) Scaling Matrix 
3) Resultant Matrix (Product of translation and scaling matrix).

Program:-

#include<stdio.h>
#include<conio.h>
#include<graphics.h>
void main()
{
int trans[3][3]={{1,0,0},{0,1,0},{0,0,1}};
float scaling[3][3]={{1,0,0},{0,1,0},{0,0,1}};
float result[3][3],sx,sy;
int tx,ty,i,j,rad,x,y;

int gd=DETECT,gm;
initgraph(&gd,&gm,"c:\\turboc3\\bgi");

printf("\nEnter the translation factors:");
scanf("%d%d",&tx,&ty);

printf("\nEnter the scaling factors:");
scanf("%f%f",&sx,&sy);

printf("\nEnter the co-ordinates of circle:");
scanf("%d%d",&x,&y);

printf("\nEnter the radius:");
scanf("%d",&rad);

ellipse(x,y,0,360,rad,rad);

trans[2][0]=tx;
trans[2][1]=ty;

sx=sx/100;
sy=sy/100;

scaling[0][0]=sx;
scaling[1][1]=sy;

for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
result[i][j]=trans[i][j]*scaling[i][j];
}
}

ellipse(x+150,y+150,0,360,result[0][0]*100,result[1][1]*100);
getch();
closegraph();
}

Output:-