Problem Set 2: Readability

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

int main() {
    char text[1000];
    printf("Write something: ");
    fgets(text, sizeof(text), stdin);
    text[strcspn(text, "\n")] = '\0';

    int lettersCount = 0;
    int wordCount = 0;
    int senCount = 0;

    for (int i = 0; text[i] != '\0'; i++) {
        if (isalpha(text[i])) {
            lettersCount++;
        }
        if (isspace(text[i])) {
            wordCount++;
        }
        if (text[i] == '.' || text[i] == '?' || text[i] == '!') {
            senCount++;
        }
    }
    wordCount++;  // Add one for the last word

    float avgLetter = (float) lettersCount / wordCount * 100;
    float avgSentence = (float) senCount / wordCount * 100;

    float index = (0.0588 * avgLetter) - (0.296 * avgSentence) - 15.8;

    if (index < 1) {
        printf("Before Grade 1\n");
    } else if (index > 16) {
        printf("Grade 16+\n");
    } else {
        printf("Grade %d\n", (int) (index + 0.5));
    }

    return 0;
}