Can't pass the test on readability

Question

So, I think function 'round' in one case does rounding to the Grade 8, instead of Grade 7. But, if I remove it, another text getting wrong grade. in both cases the grade of either one text is wrong. What should I fix?

# include<stdio.h>
# include<cs50.h>
# include<string.h>
# include<ctype.h>
# include<math.h>

int main(void)
{
    string text = get_string("Text: ");
    int let = 0;
    for (int i = 1, n = strlen(text); i < n; i++)
    {
        if ((text[i] >= 'a' && text[i] <= 'z') || (text[i] >= 'A' && text[i] <= 'Z'))
        {
            let++;
        }
    }
    int words = 0;
    for (int j = 1, n = strlen(text); j < n; j++)
    {
        if (text[j] == ' ')
        {
            words++;
        }
    }
    int sent = 0;
    for (int k = 1, n = strlen(text); k < n; k++)
    {
        if (text[k] == '.' || text[k] == '!' || text[k] == '?')
        {
            sent++;
        }
    }
    float L = (let * 100) / words;
    float S = (sent * 100) / words;
    int index = round(0.0588 * L - 0.296 * S - 15.8);
    if (index < 1)
    {
        printf("Before Grade 1\n");
    }
    else if(index > 16)
    {
        printf("Grade 16+\n");
    }
    else
    {
        printf("Grade %i\n", index);
    }
}

Here is my program

[

Answer 1

Are you sure that your letters, words and sentences counts are correct? If they're not, then the calculatiions will be broken. Seems like some of them might be off by 1.

Since you posted a screenshot instead of cutting and pasting your code, I can't test it.

If this answers your question, please click on the check mark to accept. Let's keep up on fourm maintenance. ;-)

Answer 2

Why have you put 1 to your letters, words and sentence count?

Because it will by default result in extra +1 calculation.

Here is a preview

int letters = 0;
int words = 0;
int sentences = 0;

Get back to me if you don't understand. Please make sure to tick the answer if I helped you :)