operator use switch

#include <stdio.h>

int main()
{
double a,b;
char choice;

scanf("%c" ,&choice);
scanf("%lf %lf",&a ,&b);

switch (choice)
{

case '*':
    printf("%.2lf\n", a*b);
    break;

case '+':
    printf("%.2lf\n",a+b);
    break;

case '-':
    printf("%.2lf\n",a-b);
    break;

case '/':
    printf("%.2lf\n",a/b);
    break;
}

return 0;
}