Length Conversion Program Using C Language

#include
#include
void main(){
int ch,op=1;
float val;
start:
clrscr();
printf("\n\n\t\t\t\tLength Conversion\n");
printf("\n 1- MM 2- CM 3- Inch 4- Foot 5- Meter 6- Kilo Meter 7-Exit ");
do{
printf("\n\n\tEnter Your Choice\n");
gotoxy(27,7);
scanf("%d",&ch);
printf("\n\tEnter Your Value");
gotoxy(27,9);
scanf("%f",&val);
gotoxy(6,12);
printf("ÉÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ»");
gotoxy(6,14);
printf("ÇÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄĶ");
gotoxy(6,16);
printf("ÇÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄĶ");
gotoxy(6,18);
printf("ÇÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄĶ");
gotoxy(6,20);
printf("ÇÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄĶ");
gotoxy(6,22);
printf("ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ");



switch(ch){
case(1): gotoxy(10,10);
printf("\n\t\t\t%f Milli Meter",val);
printf("\n\n\tCM =\t%f",val/10);
printf("\n\n\tM =\t%f",val/1000);
printf("\n\n\tKM =\t%f",val/1000000);
printf("\n\n\tInch=\t%f",val/25.4);
printf("\n\n\tFoot=\t%f",1/12.0*val/25.4);
break;
case(2): gotoxy(10,10);
printf("\n\t\t\t%f Centi Meter",val);
printf("\n\n\tMM =\t%f",val*10);
printf("\n\n\tM =\t%f",val/100);
printf("\n\n\tKM =\t%f",val/100000);
printf("\n\n\tInch=\t%f",val/2.54);
printf("\n\n\tFoot=\t%f",1/12.0*val/2.54);
break;
case(3): gotoxy(10,10);
printf("\n\t\t\t%f Inch",val);
printf("\n\n\tMM =\t%f",val*25.4);
printf("\n\n\tCM =\t%f",val*2.54);
printf("\n\n\tM =\t%f",val*0.0254);
printf("\n\n\tKM =\t%f",val*0.0000254);
printf("\n\n\tFoot=\t%f",val/12.0);
break;
case(4): gotoxy(10,10);
printf("\n\t\t\t%f Foot",val);
printf("\n\n\tMM =\t%f",val*304.8);
printf("\n\n\tCM =\t%f",val*30.48);
printf("\n\n\tM =\t%f",val*0.3048);
printf("\n\n\tKM =\t%f",val*0.0003048);
printf("\n\n\tInch=\t%f",val*12.0);

break;
case(5): gotoxy(10,10);
printf("\n\t\t\t%f Meter",val);
printf("\n\n\tMM =\t%f",val*1000.0);
printf("\n\n\tCM =\t%f",val*100.0);
printf("\n\n\tKM =\t%f",val/1000.0);
printf("\n\n\tInch=\t%f",val*39.3700788);
printf("\n\n\tFoot=\t%f",val*3.2808399);
break;
case(6): gotoxy(10,10);
printf("\n\t\t\t%f Kilo Meter",val);
printf("\n\n\tMM =\t%f",val/1000000.0);
printf("\n\n\tCM =\t%f",val/100000.0);
printf("\n\n\tM =\t%f",val/1000.0);
printf("\n\n\tInch=\t%f",val*3280.8399);
printf("\n\n\tFoot=\t%f",val*273.403325);
break;
default:
clrscr();
gotoxy(10,13);
printf("\n\t\t\tYour Main Option Is Wrong");
getch();
}
gotoxy(50,23);
printf("Designed By: Mr. SAEED AHMAD ");
gotoxy(50,24);
printf("+92-301-7640931 ®¯More 1/0 ");
scanf("%d",&op);
if(op==1)
goto start;
else ch=7;
}while(ch!=7);
//getch();
}