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readability.c
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readability.c
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#include <stdio.h>
#include <cs50.h>
#include <string.h>
#include <ctype.h>
#include <math.h>
int count_letters(string);
int count_words(string);
int count_sentences(string);
int main(void)
{
int letters = 0;
int sentences = 0;
int words = 0;
int grade = 0;
string phrase = get_string("Text: ");
//convert text to lowercase first
for (int i = 0; phrase[i]; i++)
{
phrase[i] = tolower(phrase[i]);
}
//printf("%s\n", phrase);
//calling count_letters function to return its value in variable called letters
letters = count_letters(phrase);
printf("Letters: ");
printf("%i\n", letters);
//calling count_words function to return its value in variable called words
words = count_words(phrase);
/*
printf("Words: ");
printf("%i\n", words);
*/
//calling count_sentences function to return its value in variable called sentences
sentences = count_sentences(phrase);
/*
printf("Sentences: ");
printf("%i\n", sentences);
*/
grade = round((0.0588 * ((float) letters * 100 / (float) words)) - (0.296 * ((float) sentences * 100 / (float) words)) - 15.8);
if (grade < 1)
{
printf("Before Grade 1\n");
}
else if (grade >= 16)
{
printf("Grade 16+\n");
}
else
{
printf("Grade ");
printf("%i\n", grade);
}
}
//function to count letters in a text
int count_letters(string phrase)
{
int letters_count = 0;
for (int i = 0; phrase[i]; i++)
{
if ((phrase[i] >= 'a' && phrase[i] <= 'z'))
{
letters_count += 1;
}
}
return letters_count;
}
//function to count words in a text
int count_words(string phrase)
{
int words_count = 0;
int length = strlen(phrase);
for (int i = 0; i <= length ; i++)
{
if (phrase[i] == ' ' || phrase[i] == '\0')
{
words_count += 1;
}
}
return words_count;
}
//funtion that calculates number of words in a text
int count_sentences(string phrase)
{
int sentences_count = 0;
for (int i = 0; phrase[i] ; i++)
{
if (phrase[i] == '.' || phrase[i] == '!' || phrase[i] == '?')
{
sentences_count += 1;
}
}
return sentences_count;
}