Program Specifications. Write a program to calculate the cost of hosting three pizza parties on Friday, Saturday and Sunday. Read from input the number of people attending, the average number of slices per person and the cost of one pizza. Dollar values are output with two decimals. For example, printf("Cost: $%.2f", cost);
Operations
In mathematics and computer science, an operation is an event that is carried out to satisfy a given task. Basic operations of a computer system are input, processing, output, storage, and control.
Basic Operators
An operator is a symbol that indicates an operation to be performed. We are familiar with operators in mathematics; operators used in computer programming are—in many ways—similar to mathematical operators.
Division Operator
We all learnt about division—and the division operator—in school. You probably know of both these symbols as representing division:
Modulus Operator
Modulus can be represented either as (mod or modulo) in computing operation. Modulus comes under arithmetic operations. Any number or variable which produces absolute value is modulus functionality. Magnitude of any function is totally changed by modulo operator as it changes even negative value to positive.
Operators
In the realm of programming, operators refer to the symbols that perform some function. They are tasked with instructing the compiler on the type of action that needs to be performed on the values passed as operands. Operators can be used in mathematical formulas and equations. In programming languages like Python, C, and Java, a variety of operators are defined.
Program Specifications. Write a program to calculate the cost of hosting three pizza parties on Friday, Saturday and Sunday. Read from input the number of people attending, the average number of slices per person and the cost of one pizza. Dollar values are output with two decimals. For example, printf("Cost: $%.2f", cost);
Note: this program is designed for incremental development. Complete each step and submit for grading before starting the next step. Only a portion of tests pass after each step but confirm progress.
Step 1 . Read from input the number of people (int), average slices per person (double) and cost of one pizza (double). Calculate the number of whole pizzas needed (8 slices per pizza). There will likely be leftovers for breakfast. Hint: Use the ceil() function found in the math library to round up to the nearest whole number and convert to an integer. Calculate and output the cost for all pizzas. Submit for grading to confirm 1 test passes.
Ex: If the input is:
10 2.6 10.50
The output is:
Friday Night Party 4 Pizzas: $42.00
Step 2 . Calculate and output the sales tax (7%). Calculate and output the delivery charge (20% of cost including tax). Submit for grading to confirm 2 tests pass.
Ex: If the input is:
10 2.6 10.50
The output is:
Friday Night Party 4 Pizzas: $42.00 Tax: $2.94 Delivery: $8.99
Step 3 . Calculate and output the total including pizza, tax and delivery. Submit for grading to confirm 3 tests pass.
Ex: If the input is:
10 2.6 10.50
The output is:
Friday Night Party 4 Pizzas: $42.00 Tax: $2.94 Delivery: $8.99 Total: $53.93
Step 4 . Repeat steps 1 - 3 with additional inputs for Saturday night (one order per line). Maintain and output a separate total for both parties. Submit for grading to confirm 5 tests pass.
Ex: If the input is:
9 2.5 10.95 14 3.2 14.95
The output is:
Friday Night Party 3 Pizzas: $32.85 Tax: $2.30 Delivery: $7.03 Total: $42.18 Saturday Night Party 6 Pizzas: $89.70 Tax: $6.28 Delivery: $19.20 Total: $115.17 Weekend Total: $157.35
Step 5 . Repeat steps 1 - 3 with additional inputs for Sunday night (one order per line). Maintain and output a total for all parties. Submit for grading to confirm all tests pass.
Ex: If the input is:
6 2.8 10.95 22 2.1 12.95 12 1.8 14.95
The output is:
Friday Night Party 3 Pizzas: $32.85 Tax: $2.30 Delivery: $7.03 Total: $42.18 Saturday Night Party 6 Pizzas: $77.70 Tax: $5.44 Delivery: $16.63 Total: $99.77 Sunday Night Party 3 Pizzas: $44.85 Tax: $3.14 Delivery: $9.60 Total: $57.59 Weekend Total: $199.53
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