when you input -
Alice was beginning to get very tired of sitting by her sister on the bank, and of having nothing to do: once or twice she had peeped into the book her sister was reading, but it had no pictures or conversations in it, "and what is the use of a book," thought Alice "without pictures or conversation?"
it should output grade 8 but it outputs grade 9
#include <cs50.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <math.h>
int main(void)
{
float l = 0;
float w = 1;
float s = 0;
// get text from user
string text= get_string("Your text:");
//string longiness
int length = strlen(text);
for (int k = 0; k < length; k++)
{
// num of all letters
if isalpha(text[k])
{
l++;
}
// num of words
if isalpha(text[k])
{
if (isspace(text[k-1]) || text[k-1] == '!' || text[k-1] == '.' || text[k-1] == '?')
{
w++;
}
}
// num of sentences
if (text[k] == '!' || text[k] == '.' || text[k] == '?')
{
s++;
}
}
// calculating avarge of letters per 100 words
float L = l / w * 100;
// calculating average number of sentences per 100 words
float S = s / w * 100;
// Coleman-Liau index calculating
int index = round((0.0588 * L) - (0.296 * S) - 15.8);
// output: what grade is text for
if (index < 1)
printf("Before Grade 1\n");
else if (index <= 16 && index > 1)
printf("Grade %i\n", index);
else
printf("Grade 16+\n");
}