用C语言编写Coleman-Liau索引可读性测试程序

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

float calculateColemanLiauIndex(char* text) {
    int letters = 0;
    int words = 0;
    int sentences = 0;

    // 计算字符数、单词数和句子数
    for (int i = 0; text[i] != '\0'; i++) {
        if (isalpha(text[i])) {
            letters++;
        }
        if (isspace(text[i]) && isalpha(text[i + 1])) {
            words++;
        }
        if (text[i] == '.' || text[i] == '!' || text[i] == '?') {
            sentences++;
        }
    }

    // 计算Coleman-Liau索引
    float L = (float) letters / words * 100;
    float S = (float) sentences / words * 100;
    float index = 0.0588 * L - 0.296 * S - 15.8;

    return index;
}

int main() {
    char text[] = "This is a sample text. It contains multiple sentences. Each sentence is separated by a period.";

    float index = calculateColemanLiauIndex(text);
    printf("Coleman-Liau Index: %.2f\n", index);

    return 0;
}