Fun with Characters
Complete the checkCharacter() method which has 2 parameters: A String, and a specified index (int). The method checks the character at the specified index of the String parameter and returns a String based on the type of character at that location indicating if the character is a letter, digit, whitespace, or unknown character.

Ex: The method calls below with the given arguments will return the following Strings:
checkCharacter("happy birthday", 2) returns "Character 'p' is a letter"
checkCharacter("happy birthday", 5) returns "Character ' ' is a white space"
checkCharacter("happy birthday 2 you", 15) returns "Character '2' is a digit"
checkCharacter("happy birthday!", 14) returns "Character '!' is unknown"


CODE:
public class LabProgram {
public static String checkCharacter(String inputString, int index){
/* Type your code here. */
}

public static void main(String[] args) {
System.out.println(checkCharacter("happy birthday", 2));
System.out.println(checkCharacter("happy birthday", 5));
System.out.println(checkCharacter("happy birthday 2 you", 15));
System.out.println(checkCharacter("happy birthday!", 14));
}
}

The program is an illustration of conditional statements.

Conditional statements are statements whose execution is dependent on the truth value of the condition.

The checkCharacter() method in Java, where comments are used to explain each line is as follows:

//This defines the checkCharacter() method

public static String checkCharacter(String inputString, int index){

  //This checks if the character at the index, is a digit

  if(Character.isDigit(inputString.charAt(index))){

      //If yes, it returns "Digit"  

      return "Character "+inputString.charAt(index)+" is a digit";

  }

  //This checks if the character at the index, is a letter

  else if(Character.isLetter(inputString.charAt(index))){

      //If yes, it returns "letter"

      return "Character "+inputString.charAt(index)+" is a Letter";

  }

  //This checks if the character at the index, is a white space

  else if(inputString.charAt(index) ==' '){

      //If yes, it returns "white space"

      return "Character "+inputString.charAt(index)+" is a white space";

  }

  #If all the above conditions are false

   else{

      //If yes, it returns "unknown character"

      return "Character "+inputString.charAt(index)+" is an unknown character";

  }

}

The string to return depends on the character at the index.

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-------------------------------------------------------------
12.20 LAB: Driving costs - functions

Driving is expensive. Write a program with a car's miles/gallon and gas dollars/gallon (both floats) as input, and output the gas cost for 10 miles, 50 miles, and 400 miles.

Output each floating-point value with two digits after the decimal point, which can be achieved as follows:
print('{:.2f}'.format(your_value))

Ex: If the input is:

20.0
3.1599

the output is:

1.58
7.90
63.20

Your program must define and call the following driving_cost() function. Given input parameters driven_miles, miles_per_gallon, and dollars_per_gallon, the function returns the dollar cost to drive those miles.

Ex: If the function is called with:

50 20.0 3.1599

the function returns:

7.89975

def driving_cost(driven_miles, miles_per_gallon, dollars_per_gallon)

Your program should call the function three times to determine the gas cost for 10 miles, 50 miles, and 400 miles.
---------------------------------------------------
I need help for this part
Ex: If the function is called with:

50 20.0 3.1599

how do I get it to input the three to get the output of 7.89975?
-------------------------------------
My code:

# Define your function here.
def driving_cost(driven_miles, miles_per_gallon, dollars_per_gallon):
return (driven_miles/miles_per_gallon) * dollars_per_gallon

if __name__ == '__main__':
# Type your code here.

# Miles per gallon from input
miles_per_gallon = float(input())

#Dollars per gallon from input
dollars_per_gallon = float(input())


# Display the results as output

print('{:.2f}'.format(driving_cost(10, miles_per_gallon,dollars_per_gallon)))
print('{:.2f}'.format(driving_cost(50, miles_per_gallon,dollars_per_gallon)))
print('{:.2f}'.format(driving_cost(400, miles_per_gallon,dollars_per_gallon)))