C program on calculating the amount with tax using assignment operator

Problem

Write a C Program to enter the amount in dollars and then display the amount by adding 18% as tax.

Solution

Let’s consider the restaurant person adding 18% tax to every bill of the customer.

The logic applied to calculate tax is −

value=(money + (money * 0.18));

The money should be multiplied by 18% and add to the money, then the restaurant person can receive the amount from a customer with tax.

Example

#include<stdio.h>
int main(){
   float money,value;
   printf("enter the money with dollar symbol:");
   scanf("%f",&money);
   value=(money + (money * 0.18));
   printf("amount after adding tax= %f\n",value);
   return 0;
}

Output

enter the money with dollar symbol:250$
amount after adding tax= 295.000000

Example

Let us consider the same program by changing the percentage −

#include<stdio.h>
int main(){
   float money,value;
   printf("enter the money with dollar symbol:");
   scanf("%f",&money);
   value=(money + (money * 0.20));
   printf("amount after adding tax= %f\n",value);
   return 0;
}

Output

enter the money with dollar symbol:250$
amount after adding tax= 300.000000