CS50 Problem Set 2 (Fall 2019) - Readability

Readability.c

//CS50 Problem Set 2 (Fall 2019): Readability
//Author: teeschorle

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

int main(void)
{
    string text = get_string("Text: ");
    int letterscount = 0;
    int wordcount = 1;
    int sentencecount = 0;

//count words
    for (int i = 0; i < strlen(text); i++)
    {
       if ((text[i] >= 'a' && text[i] <= 'z') || (text[i] >= 'A' && text[i] <= 'Z'))
       {
           letterscount++;
       }
       else if (text[i] == ' ')
       {
           wordcount++;
       }
       else if (text[i] == '.' || text[i] == '!' || text[i] == '?')
       {
           sentencecount++;
       }
    }
//    printf("letters: %i; words: %i; sentences: %i\n", letterscount, wordcount, sentencecount);

    float grade = 0.0588 * (100 * (float) letterscount / (float) wordcount) - 0.296 * (100 * (float) sentencecount / (float) wordcount) - 15.8;
    if (grade < 16 && grade >= 0)
    {
        printf("Grade %i\n", (int) round(grade));
    }
    else if (grade >= 16)
    {
        printf("Grade 16+\n");
    }
    else
    {
        printf("Before Grade 1\n");
    }

}

thanks man
appreciate it man