How to create histogram?

[Deadmau6]

Hi, i'm a total beginner for C++ and for my tutorial exercise i have been told to create a histogram (a question like this may come up in the exam as i been told).

Anyway i understand you need to assign arrays to create a histogram and that is the only thing i know.

My programe is basically about benchmarks, 20 different programes and the user has to input them giving them marks out of 100 and each star in the histogram represents the mark it recieved. The histogram should look something like this.

0-29 **
30-39 ***
40-69 *************
70-100 **

Anyways, i'm not asking the helpers on this forum to create the programe for me or give me the codes all i'm asking is what steps do i take inorder to create the histogram like for e.g. how can a user input a mark (28) and it will show up in the histogram?

Thanks any help would be appreciated.

[Deadmau6]

P.S All i understand i i need to create 4 loops but i don't know how will i do them and how will a user input the marks in order for the start to show up in the histogram.

[stereoMatching]

just some pseudo code

for(size_t i = 0; i < 20; ++i)
  cin>>your score

std::sort(your container)
position = find_if(> 30);
range_0_29 = distance(begin of your contianer, position);
.........

[Deadmau6]

Thanks man, i'll try this out.

[Deadmau6]

Thanks for the reply but how do i assign the marks 0-29, 30-39,40-69 and 70-100 into arrays so the stars can show up on that?

[stereoMatching]

you don't need to assign the marks into the arrays
you only need to count how many scores within the specific range
and output the stars according to the number of the scores

  for(size_t i = 0; i < range_0_29; ++i)
    cout<<"*";

something like that
ps : there are many ways to solve this problem
the way I stated are not very good since it is a little bit complicated
you could use an easier way to solve this problem

[Deadmau6]

Thanks friend, you just solved it for me by saying i don't have to put marks into arrays.