LEVEL 3 DATA TYPES (CHALLENGES)

CODING CHALLENGES | DATATYPES AND OPERATORS

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ON THIS PAGE
CHALLENGE 1 | PRINTING PI
CHALLENGE 2 | FIRST CALCULATOR
CHALLENGE 3 | MEAL CALCULATOR

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CHALLENGE 1 | PRINTING PI

When using numbers we can write our programs to manage and manipulate numbers, at an early stage of coding you may be tempted to simply enter the answer manually, however an important part of mastering code is learning how to get the computer to do the work for you. Can you write a program to manipulate the value of Pi: 3.1415.
Create a program to do the following:
1: Store the value of Pi to 4dp in a variable
2: Use a method to output the value stored as an integer, with no decimal places.
3: Use a method to output the value stored as a float to 2dp with no rounding.

EXAMPLE OUTPUT
3
3.14

EXTENSION TASK
Output the values in a user friendly way by concatenating a string with the number.
EXAMPLE OUTPUT
Pi with zero decimal places is 3
Pi two 2 decimal places is 3.14

CHALLENGE 2 | FIRST CALCULATOR

Create a program to produce the sums and output for the following:
1: Use a method to calculate 21 + 5. Output the result.
2: Use a method to calculate 21 - 5. Output the result.
3: Use a method to calculate 21 * 5. Output the result.
4: Use a method to calculate 21 / 5. Output the result.
5: Use a method to calculate the exponent of 21 ^ 5. Output the result.
6: Use a method to calculate the integer division of 21 div 5. Output the result.
7: Use a method to calculate the modulus of 21 mod 5. Output the result.
NOTE: All outputs should be in a user friendly string. (use concatenation)

EXAMPLE OUTPUT
The addition of 21 + 5 = 26
The subtraction of 21 - 5 = 16
The multiplication of 21 * 5 = 105
The division of 21 / 5 = 4.2
The exponent of 21 ^ 5 = 4084101
The integer division of 21 / 5 = 4
The modulus of 21 / 5 = 1

CHALLENGE 3 | MEAL CALCULATOR

CREATE A PROGRAM THAT DOES THE FOLLOWING:

1: Ask the user to 'Enter the cost of the main course' - store in a variable
2: Ask the user to 'Enter the cost of the drink' - store in a variable
3: Ask the user to 'Enter the cost of the desert' - store in a variable
4: Add up the 3 values and store in a variable called 'subtotal'
5: Add 20% tax to the subtotal and store in a variable called 'total'
6: Output/print the total value of the meal.

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