第一個個人項目四則運算生成器參考源代碼：https://zhidao.baidu.com/question/532330836.html?qbl=relate_question_0&word=%D3%C3C%D3%EF%D1%D4%CA%B5%CF%D6%CB%C4%D4%F2%D4%CB%CB%E3%C9%FA%B3%C9%C6%F7

改了一點點功能，運行有錯誤，也改過來了。

#define _CRT_SECURE_NO_WARNINGS

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include
 
<conio.h>
int test(int number)
{
    int counter = 0;
    int answer = 0;
    int result = 0;
    int m = 0;
    int n = 0;
    char op = 0;

    while (number--)
    {
        m = rand() % 10;
        n = rand() % 10;
        op = rand() % 4;

        switch (op)
        {
        case 0:
            op 
 
= ‘+‘;
            answer = m + n;
            break;
        case 1:
            op = ‘-‘;
            answer = m - n;
            break;
        case 2:
            op = ‘*‘;
            answer = m*n;
            break;
        case 3:
            ++n;
            op = ‘/‘;
            answer = m / n;
            
 
break;
        default:
            break;
        }

        printf("題目：");
        printf("%d %c %d = ", m, op, n);
        while (scanf("%d", &result) != 1)
            fflush(stdin);
        if (answer == result)
            ++counter;
    }

    return counter;
}

int main()
{
    int number;
    srand(time(NULL));

    printf("開始做題\n");
    printf("請輸入題目數：");
    while (scanf("%d", &number) != 1)
        fflush(stdin);
    printf("答題結束，總共答對%d道題目\n", test(number));
    return 0;

    _getch();
}

已上傳到github,鏈接：https://github.com/FawnRain/Four-Arithmetic-Operations

四則運算生成器-個人項目1