Write a C++ program that reads a list of numbers from a file into an array, then uses that array to find the average of all the numbers, the average of the positive and negative numbers (0 is neither positive nor negative!), and the largest number. The point is to be able to store data in an array and do things with it Your program must contain at least the following four functions... read_list() This function will take as input parameters an array of integers and a string filename. It will open that file and read in numbers, storing them in the array, stopping at the end of the file. Remember that there are tricky issues with extra whitespace at the end of the file. You can assume the file contains only integers. The function will return the number of numbers that were read in. Note: In versions of Visual C++ pre-2010, when using the open function with a string argument, you must call the c_str() function on the string variable, such as: my_input_stream.open( filename.c_str() ) 2. averages() This function will take as input parameters an array of integers and the length (the number of valid numbers) in that array. It will pass back 3 real number values: the average of those numbers, the average of the positive numbers and the average of the negative numbers. 0 is not considered positive or negative for this assignment. 3. largest This function will take as input parameters an array of integers and the length (the number of valid numbers) in that array. The function will return the largest number in the array. 4. display This function will take as input parameters all the values of interest from the first 3 functions. It will print to the screen a report that looks like: 10 numbers read from file "data.txt". The average of all the numbers is: 17.3. The average of the positive numbers is: 23.5. The average of the negative numbers is: -5.1. The largest number is: 61
Write a C++ program that reads a list of numbers from a file into an array, then uses that array to find the average of all
the numbers, the average of the positive and negative numbers (0 is neither positive nor negative!), and the largest
number. The point is to be able to store data in an array and do things with it
Your program must contain at least the following four functions...
read_list()
This function will take as input parameters an array of integers and a string filename. It will open that file and
read in numbers, storing them in the array, stopping at the end of the file. Remember that there are tricky issues
with extra whitespace at the end of the file. You can assume the file contains only integers. The function will
return the number of numbers that were read in.
Note: In versions of Visual C++ pre-2010, when using the open function with a string argument, you must call
the c_str() function on the string variable, such as:
my_input_stream.open( filename.c_str() )
2. averages()
This function will take as input parameters an array of integers and the length (the number of valid numbers) in
that array. It will pass back 3 real number values: the average of those numbers, the average of the positive
numbers and the average of the negative numbers. 0 is not considered positive or negative for this assignment.
3. largest
This function will take as input parameters an array of integers and the length (the number of valid numbers) in
that array. The function will return the largest number in the array.
4. display
This function will take as input parameters all the values of interest from the first 3 functions. It will print to the
screen a report that looks like:
10 numbers read from file "data.txt".
The average of all the numbers is: 17.3.
The average of the positive numbers is: 23.5.
The average of the negative numbers is: -5.1.
The largest number is: 61
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