#include <stdio.h> #include "math_questions.h" #include "utils.h"

int main() { int choice; int numQuestions;

printf("欢迎使用小学数学题测试应用系统！\n");

do {
    printf("\n===== 功能选择 =====\n");
    printf("1. 加法\n");
    printf("2. 减法\n");
    printf("3. 乘法\n");
    printf("4. 除法\n");
    printf("5. 求模\n");
    printf("6. 混合运算\n");
    printf("0. 退出\n");

    printf("请选择功能: ");
    scanf("%d", &choice);

    switch (choice) {
        case 1:
        case 2:
        case 3:
        case 4:
        case 5:
        case 6:
            printf("请输入题目数量: ");
            scanf("%d", &numQuestions);
            testMathOperation(choice, numQuestions);
            break;
        case 0:
            printf("退出程序。\n");
            break;
        default:
            printf("无效的选项，请重新输入。\n");
    }

} while (choice != 0);

return 0;

} #include "math_questions.h" #include "utils.h" #include <stdlib.h>

void testMathOperation(int operation, int numQuestions) { int correctAnswers = 0; int incorrectAnswers = 0;

for (int i = 0; i < numQuestions; ++i) {
    int operand1 = generateRandomNumber(1, 100);
    int operand2 = generateRandomNumber(1, 100);
    int userAnswer, correctAnswer;

    switch (operation) {
        case 1:
            correctAnswer = operand1 + operand2;
            break;
        case 2:
            correctAnswer = operand1 - operand2;
            break;
        case 3:
            correctAnswer = operand1 * operand2;
            break;
        case 4:
            // 避免除数为零
            operand2 = (operand2 == 0) ? 1 : operand2;
            correctAnswer = operand1 / operand2;
            break;
        case 5:
            // 求模，避免除数为零
            operand2 = (operand2 == 0) ? 1 : operand2;
            correctAnswer = operand1 % operand2;
            break;
        case 6:
            // 随机选择一种运算
            int randomOperation = generateRandomNumber(1, 4);
            switch (randomOperation) {
                case 1:
                    correctAnswer = operand1 + operand2;
                    break;
                case 2:
                    correctAnswer = operand1 - operand2;
                    break;
                case 3:
                    correctAnswer = operand1 * operand2;
                    break;
                case 4:
                    // 避免除数为零
                    operand2 = (operand2 == 0) ? 1 : operand2;
                    correctAnswer = operand1 / operand2;
                    break;
            }
            break;
    }

    printf("题目 %d: %d", i + 1, operand1);

    switch (operation) {
        case 1:
            printf(" + ");
            break;
        case 2:
            printf(" - ");
            break;
        case 3:
            printf(" * ");
            break;
        case 4:
            printf(" / ");
            break;
        case 5:
            printf(" %% ");
            break;
        case 6:
            switch (randomOperation) {
                case 1:
                    printf(" + ");
                    break;
                case 2:
                    printf(" - ");
                    break;
                case 3:
                    printf(" * ");
                    break;
                case 4:
                    printf(" / ");
                    break;
            }
            break;
    }

    printf("%d = ?", operand2);

    printf("\n你的答案: ");
    scanf("%d", &userAnswer);

    if (userAnswer == correctAnswer) {
        printf("恭喜，回答正确！\n");
        correctAnswers++;
    } else {
        printf("很抱歉，回答错误。正确答案是 %d\n", correctAnswer);
        incorrectAnswers++;
    }
}

printf("\n===== 测试结果 =====\n");
printf("正确答案数: %d\n", correctAnswers);
printf("错误答案数: %d\n", incorrectAnswers);

}#ifndef MATH_QUESTIONS_H #define MATH_QUESTIONS_H

void testMathOperation(int operation, int numQuestions);

#endif // MATH_QUESTIONS_H #ifndef UTILS_H #define UTILS_H

int generateRandomNumber(int min, int max);

#endif // UTILS_H