Is it possible to input an operator by character get result ?

Question

#include <stdio.h>
main()
{
float a,b, result;
char op;
printf("first number =");
scanf("%f",&a);
printf("Enter the operator= %c ",op);
scanf(" %c",&op);
printf("\nsecond number=");
scanf("%d",&b);
result= a op b;
printf("rsult = %f",result);
return 0;
}

Answer 1

I'm not sure, if there is an easier option, but I would use a switch statement and a case for each supported operator

Answer 2

Incorrect format specifier used for reading value of variable <b>. Type of variable <b> is a float, so use %f instead of %d, as follows:
scanf("%f", &b);