readability.c

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

int main(void)
{
    string word;
    word = get_string("Text: ");

    //Count total letters
    int numLetters=0;
    for (int i=0; i<strlen(word); i++)
    {
        if (isalpha(word[i]) != 0)
        {
            numLetters++;
        }
    }

    int spaces=0;
    //Count words (spaces)
    for (int i=0; i<strlen(word); i++)
    {
        if (word[i] == ' ')
        {
            spaces++;
        }
    }
    int words = spaces+1;

    //Count sentences
    int sentences=0;
    for (int i=0; i<strlen(word); i++)
    {
        if (word[i] == '.' || word[i] == '!' || word[i] == '?')
        {
            sentences++;
        }
    }
    //printf("%i\n", numLetters);
    //printf("%i\n", words);
    //printf("%i\n", sentences);

    float L=0;
    float S=0;
    L = 100.0 * numLetters / words;
    S = 100.0 * sentences / words;
    float index=0;
    index = 0.0588 * L - 0.296 * S - 15.8;
    int grade=0;
    grade = round(index);

    if (grade<1)
    {
        printf("Before Grade 1\n");
    }
    else if (grade>=16)
    {
        printf("Grade 16+\n");
    }
    else
    {
        printf("Grade %i\n", grade);
    }






}