Source Code of Calculator in C Language

# include <stdio.h>

#include<conio.h>
int main()
{
     char operator;
     float num1,num2;
     printf("Enter operator either + or - or * or divide : ");
     scanf("%c",&operator);
     printf("Enter two operands: ");
     scanf("%f%f",&num1,&num2);
     switch(operator)
     {
     case '+':
              printf("num1+num2=%.2f",num1+num2);
              break;
     case '-':
              printf("num1-num2=%.2f",num1-num2);
              break;
     case '*':
              printf("num1*num2=%.2f",num1*num2);
              break;
     case '/':
              printf("num2/num1 = %.2f",num1/num2);
              break;
     default:
              printf("Error! operator is not correct");
              break;
     }
     return 0;
}