so i have a problem figuring out what is wrong with my readability code, everything seems okay and I checked it with debug50 but somehow the variable (S) always equals 0, no matter the numbers were, even i ran my debug50 and got the numbers of (sentences) and (words) and calculate it its impossible that it would be (0). so how is it always (0)? or in other words what is wrong with my code?!

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#include <stdio.h>

#include <cs50.h>

#include <string.h>

#include <ctype.h>

#include <stdlib.h>

#include <math.h>

​

int main(void)

{

// getting the text from the user.

string text = get_string("Text: ");

int letters = 0;

int words = 1;

int sentences = 0;

// looping the text to get the number of letters/ wordds/ sentences

for (int i = 0, n = strlen(text); i < n; i )

{

// checking if the letter is alphabatical character

if (isalpha(text[i]))

{

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letters ;

}

// checking if its a blank(space) and add one to the words counter if it is

if (isblank(text[i]))

{

words ;

}

// checking if there is a (!), (.) or (?) and adding one to the sentence counter

if (text[i] == 46 || text[i] == 63 || text[i] == 33)

{

sentences ;

}

}

// calculating the L and the S for the formula

float L = letters / words * 100;

float S = sentences / words * 100;

// calculating the formula

float index = 0.0588 * L - 0.296 * S - 15.8;

// rounding the index to become an integer

int grade = round(index);

// checking and printing the grades as required

if (grade < 0)

{

printf("Before Grade 1\n");

}

else if (grade <= 16 && grade > 0)

{

printf("Grade %i\n", grade);

}

else

{

printf("Grade 16 \n");

}

​

}