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drjulio2002

Problem understanding instructions!

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Hello Everyone! I don't clearly understand the following instructions from "The C Programming Language": "Write a program to print a histogram of the lengths of words in its input. It is easy to draw the histogram with the bars horizontal; a vertical orientation is more challenging." I know the histogram, but...What do you understand from it? Thanks!

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Essentially you want to do this:

1. Loop through all the inputs
2. Create an array that stores the length of each of those inputs
3. Print out your histogram


//Assuming you have lengths between 1 and 10
int g_nArray[10]; // index 0 is unused

int main(int argc, char *argv[])
{
// argc == # of parameters
// argv == the parameters in array form

for(int i=1; i<argc; i++)
{
if(strlen(argv) < 10)
{
g_nArray[ strlen(argv) ]++;
}
else
{
continue;
}
}

//Print the histogram

for(int j=0; j<10; j++)
{
cout<<"-"<<j<<" ";
for(int z=0; z<g_nArray[j]; z++)
{
cout<<"*";
}
cout<<endl;
}
}


g/l

EDIT:
Here are the results from running:
cmd> histogram.exe the cat ran from the dog

-0
-1
-2
-3 *****
-4 *
-5
-6
-7
-8

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making a vertical one just helps you to develop problem solving skills, as it's not as straightforward as a horizontal one.

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Quote:
Original post by Undergamer
//Assuming you have lengths between 1 and 10
int g_nArray[10]; // index 0 is unused

This way you'll only be able to count words up to the length of 9, not 10.

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Hello Everyone!

Thanks for your replies, I'll make a version of this program later, and show it to you, so that you can see my way of thinking of this problem. and I think the above user is right 0-9 of an array I think, that's what they don't like to see, but thanks for your reply!

Again Thanks to all!

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