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

int count_letters(string);
int count_words(string);
int count_sentences(string);

float l, w, s;

int main(void)
{
    //Get text
    string text = get_string("Text:");

    //Get the length of text
    int i = strlen(text);

    //Coleman-Liau index
    float L = 100.0f * (l / (float)w);
    float S = 100.0f * (s / (float)w);
    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);
    }

}

int count_letters(string text)
{
    //Letters start from 0
    l = 0;

    for (int i = 0, n = strlen(text); i < n; i  )
    {
        if (isalpha(text[i]))
        {
            l  ;
        }
    }
    return l;
}

int count_words(string text)
{
    //Spaces   1 equals to count of words
    w = 1;

    for (int i = 0, n = strlen(text); i < n; i  )
    {
        //Space equals to number 32 in ASCII Chart
        if(text[i] == ' ')
        {
            w  ;
        }
    }
    return w;
}

int count_sentences(string text)
{
    s = 0;
    for (int i = 0, n = strlen(text); i < n; i  )
    {
        if(text[i] == '!' || text[i] == '.' || text[i] == '?')
        {
            s  ;
        }
    }
    return s;
}

The index is always the same negative number so I can only get "Before Grade 1" output because i don't use any of my created functions.

I have created 3 functions below my code but I don't know how to use them in main.I want my functions to be able to calculate the count of letters(l), words(w) and sentences(s) in a text in order to find the index.Can you help me?

CodePudding user response：

Just create a variable and then call the function. The value returned by that function (hopefully an integer in this case) would be stored in it. Just as an example,

int l = count_letters(text);

Do the same thing for the other 2 functions and you are done. Also define this before Coleman-Liau index expressions.

Also remove those global variables (on line 11 probably) you don't need those.