Write a programe for make simple calculator by using switch case

#include< stdio.h >
#include< conio.h >
void main()
{

int a,b,c;
char op;
float d;
clrscr();
j:
printf("Enter 1st no:");
scanf("%d",&a);

printf("Enter 2st no:");
scanf("%d",&b);

fflush(stdin);

printf("Enter Operater:");
scanf("%c",&op);

switch(op)
{
case '+':
{
c=a+b;
printf("Answer:%d",c);
break;
}

case '-':
{
c=a-b;
printf("Answer:%d",c);
break;
}

case '*':
{
c=a*b;
printf("Answer:%d",c);
break;
}

case '/':
{
d=(float)a/(float)b;
printf("Answer:%f",d);
break;
}

case '%':
{
c=a%b;
printf("Answer:%f",c);
break;
}

default:
{
printf("\nCheck your entery:");
printf("\nSorry!!!\n Try again\n");
goto j;
}

}
getch();
}

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