Lab on decisions and loops:

1.  Write a function get_min that returns the smaller of its two floating point 
arguments:

2.  Write a short main function that reads four numbers and finds and displays 
the smallest of the 4 
numbers. Do not have any if statements in your function. Find the smallest value 
by making multiple calls to 
function get_min.

3.  Write a single assignment statement with nested function calls to get_min 
that solves problem 2 above.

4.  Write a function is_letter that returns the value true if its character 
argument is a letter (uppercase or 
lowercase). Write a main function that reads 3 characters and displays 1 of 3 
messages depending on the 
data read. Your main function must use function is_letter to determine which of 
the messages below to 
display.

      All 3 are letters
      One or more are letters
      None are letters

     The main function should call function is_letter to do this.

5.  Write a function to_uppercase that returns the uppercase form of its 
character argument if it is a letter. If 
its argument is not a letter, it should just return its argument unchanged.  

      Example: to_uppercase('a') returns 'A'
                      to_uppercase('A') returns 'A'
                      to_uppercase('#') returns '#'

6.  Write a main function that reads in a string (using getline) and changes all 
letters in the string to 
uppercase. If the input string is "Aces>Kings", the final string should be 
"ACES>KINGS". Use the string 
functions and function to_uppercase. You will have to access each character 
individually and replace it with 
its uppercase equivalent.

7.  Outside assignment: Write a function that reads a problem involving two 
common fractions such as 2/4 + 5/6 . After reading the common fractions problem, 
call a function to perform the indicated operation (call addFrac for +, call 
multiplyFrac for *, and so on). Pass the numerator and denominator of both 
fractions to the function that performs the operation; the function should 
return the numerator and denominator of the result through its output 
parameters. Then display the result as a common fraction. Hint: use functions 
readFracProblem and getFrac (see Fig. 6.5 and 6.6). Continue processing 
fractions until the line 0/0 q 0/0 is read.