A University wants to make a basic graphical display to show how many people received
different grades for a piece of work on a module (histogram). You are required to write a
program in C++ that achieves this.
The program consists of the following three tasks:
Task1 The program should allow the tutor to enter the marks which the students were
awarded until the tutor enters a mark exceeding the value of 100. Marks belong to
the following grade categories: 0-29, 30-39, 40-69, 70-100.
Each plus sign (+)
represents a student who achieved a mark in an appropriate category. At the end,
the program should display the total number of students. The program should work
with any number of students for whom marks were entered.
An example of the output is shown below. This example shows the distribution of
marks for 20 students per grade category, called a histogram:
0-29 +++
30-39 +++++
40-69 ++++++++
70-100 ++++
20 students in total
As the tutor enters each mark, a counter should count the number of students
marks which have been entered per student.
Use four categories for mark range: 0-29, 30-39, 40-69, 70-100.
Make sure the display is neatly formatted as in the example above.
Your program should make use of loops for the display of each mark category.