برنامج يحول من الدولار للشيكل والعكس من تصميمي

#include<stdio.h>
#include<conio.h>
void main()
{
float d1,d2,d3,s1,s2,s3;
clrscr();
puts("***from dollar to shiqel*** \n \n \n");
printf("enter dollar1=");
scanf("%f",&d1);
printf("enter dollar2=");
scanf("%f",&d2);
printf("enter dollar3=");
scanf("%f",&d3);
s1=d1*4;
s2=d2*4;
s3=d3*4;
printf("%-14s %10s","dollar","shiqel");
printf("\n %-10f %16f",d1,s1);
printf("\n %-10f %16f",d2,s2);
printf("\n %-10f %16f",d3,s3);
puts("\n \n \n *****************");
puts("*** from shiqel to dollar*** \n \n \n");
printf("enter shiqel1=");
scanf("%f",&s1);
printf("enter shiqel2=");
scanf("%f",&s2);
printf("enter shiqel3=");
scanf("%f",&s3);
d1=s1/4;
d2=s2/4;
d3=s3/4;
printf("%-14s %10s","shiqel","dollar");
printf("\n %-10f %16f",s1,d1);
printf("\n %-10f %16f",s2,d2);
printf("\n %-10f %16f",s3,d3);
puts("\n        ThE MaN \n    m2kar.yoo7.com");
getch();
}