Write a C program to accept the car value and category of insurance from the user and calculate premium to be paid.
1. Category A, here the basic premium is calculated as 2% of the car’s value.
2. Category B, here the basic premium is calculated as 3% of the car’s value.
3. Category C, here the basic premium is calculated as 5% of the car’s value.

If you are looking for a problem which you can solve with the help of decision statements then this is a perfect example.

Tutorial 📺

Watch tutorial and learn how to solve this problem. 😉

Steps 🪜

To calculate premium of car

  1. First of all, display all 3 car insurance categories to the user. Later, accept two values from the user, car value (floating point) and insurance category (character).
  2. Evaluate the insurance category entered by the user using switch. Since, you have accepted the car category in the form of character. There will be 2 cases for each category in uppercase and lowercase character.
  3. Now, whatever the user will enter, the matching case will be executed otherwise the default case will be executed.

Code 💻

Here, we will solve this problem using switch-case statement but you can also do it using if-else conditional statement.

#include<stdio.h>
#include<conio.h>

void main()
{
  float carval=0;
  char catg;
  clrscr();
  flushall();
  printf("Category A, the basic premium is 2%c of the car's value.\n",37);
  printf("Category B, the basic premium is 3%c of the car's value.\n",37);
  printf("Category C, the basic premium is 5%c of the car's value.\n",37);
  printf("\nPlease enter the category of Insurance Policy: ");
  scanf("%c", &catg);
  printf("\nPlease enter the car's value: ");
  scanf("%f", &carval);
  switch(catg)
  {
    case 'a': case 'A':
      printf("\nPremium of car is: %0.2f", (carval*2)/100);
      break;
    case 'b': case 'B':
      printf("\nPremium of car is: %0.2f", (carval*3)/100);
      break;
    case 'c': case 'C':
      printf("\nPremium of car is: %0.2f", (carval*5)/100);
      break;
    default:  printf("\nInvalid Category Selected.");
  }
  getch();
}

Example 😍

Let’s assume, the user enters 60,000 as car value and B as car insurance category.

After accepting the values from the user, the control will execute the switch statement, in which it will evaluate the insurance category.

Now, there exists a matching case, so it will execute the statements of that matching case i.e. case ‘B’ (60,000*3)/100.

Finally, it will display the message:

Premium of car is: 200.00

Let’s take another example where the user enters 100,000, a as car value and insurance category, respectively.

First of all, it will evaluate the insurance category. Since, there exists a matching case ‘a’, so it will calculate the car premium by executing its statements. Thus, the car premium will be (100,000*2)/100 = 2000.

Finally, it will display the message:

Premium of car is: 2000.00

This is how we write C program to calculate premium of a car based on accepted car value and insurance category. For more C programs, click here.

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C Program

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