C Program to write a simple calculator program

/* C Program to write a simple calculator to preform addition, subtraction, multiplication
 and division operations */

 #include <stdio.h>
 #include <stdlib.h>

 int main()
 {
     int num1;
     int num2;
     float result;
     int choice;

     printf("Enter the first number\n");
     scanf("%d",&num1);
     printf("Enter the second number\n");
     scanf("%d",&num2);
     printf("Enter the number of the operation you want to perform on the two entered numbers\n");
     printf("1. Addition\n");
     printf("2. Subtraction\n");
     printf("3. Multiplication\n");
     printf("4. Division\n");
     scanf("%d",&choice);

     switch(choice)
     {
         case 1:
         result=num1+num2;
         printf("Result is %f",result);
         break;

         case 2:
         result=num1-num2;
         printf("Result is %f",result);
         break;

         case 3:
         result=num1*num2;
         printf("Result is %f",result);
         break;

         case 4:
         result=(float)num1/num2;
         printf("Result is %f",result);
         break;

         default:
         printf("Invalid choice\n");
     }

     return 0;
 }