用c语言写一个背单词程序

以下是一个用C语言编写的简单背单词程序的示例：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#define MAX_NAME_LENGTH 50
#define MAX_WORD_LENGTH 100
#define MAX_WORDS 100

typedef struct {
    char chinese[MAX_WORD_LENGTH];
    char english[MAX_WORD_LENGTH];
} Word;

void readWordsFromFile(Word words[], int *numWords) {
    FILE *file = fopen("words.txt", "r");
    if (file == NULL) {
        printf("无法打开文件！\n");
        exit(1);
    }

    *numWords = 0;
    while (fscanf(file, "%s %s", words[*numWords].chinese, words[*numWords].english) == 2) {
        (*numWords)++;
    }

    fclose(file);
}

void saveRecordToFile(char name[MAX_NAME_LENGTH], int numCorrect) {
    FILE *file = fopen("record.txt", "a");
    if (file == NULL) {
        printf("无法打开文件！\n");
        exit(1);
    }

    fprintf(file, "%s %d\n", name, numCorrect);

    fclose(file);
}

void showWord(Word word) {
    printf("中文：%s\n", word.chinese);
    printf("英文：");
}

int main() {
    char name[MAX_NAME_LENGTH];
    int numWords;
    Word words[MAX_WORDS];
    int numCorrect = 0;

    printf("请输入您的姓名：");
    scanf("%s", name);

    printf("请输入需要背的单词个数：");
    scanf("%d", &numWords);

    readWordsFromFile(words, &numWords);

    srand(time(NULL));

    for (int i = 0; i < numWords; i++) {
        int randomIndex = rand() % numWords;
        Word word = words[randomIndex];

        showWord(word);

        char answer[MAX_WORD_LENGTH];
        scanf("%s", answer);

        if (strcmp(answer, word.english) == 0) {
            printf("回答正确！\n");
            numCorrect++;
        } else {
            printf("回答错误！正确答案是：%s\n", word.english);
        }
    }

    printf("您一共回答正确了%d个单词。\n", numCorrect);

    saveRecordToFile(name, numCorrect);

    return 0;
}