coding地址：https://git.coding.net/Dialect/c-sizeyunsuan.git
题目要求
- 除了整数以外，还要支持真分数的四则运算，真分数的运算，例如：1/6 + 1/8 = 7/24
- 运算符为 +, −, ×, ÷
- 并且要求能处理用户的输入，并判断对错，打分统计正确率。
- 要求能处理用户输入的真分数， 如 1/2, 5/12 等
- 使用 -n 参数控制生成题目的个数，例如执行下面命令将生成10个题目
部分代码展示
void DealInt(int n, int a[]) { srand(time(NULL)); for (int p = 0; p<n; p++) { int i = (int)rand() % 10; int j = (int)rand() % 10; int k = (int)rand() % 100 / 25; switch (k) { case 0: cout << i << "+" << j << "="; a[p] = i + j; check2(n, a); break; case 1: cout << i << "-" << j << "="; a[p] = i - j; check2(n, a); break; case 2: cout << i << "*" << j << "="; a[p] = i*j; check2(n, a); break; case 3: try { a[p] = i / j; cout << i << "/" << j << "="; check2(n, a); } catch (...) { p--; } } } float t = (float)r / (float)n; cout << "正确率:" << 100 * t << "%" << endl; } void DealFenshu(int n, int a[][2]) { srand(time(NULL)); for (int p = 0; p<n; p++) { int i = (int)rand() % 10; int j = (int)rand() % 10; while (j == 0 || i >= j) { i = (int)rand() % 10; j = (int)rand() % 10; } int x = (int)rand() % 10; int y = (int)rand() % 10; while (y == 0 || x >= y) { x = (int)rand() % 10; y = (int)rand() % 10; } int k = (int)rand() % 100 / 25; switch (k) { case 0: cout << "(" << i << "/" << j << ")" << "+" << "(" << x << "/" << y << ")" << "="; a[p][0] = i*y + x*j; a[p][1] = j*y; check1(n, a); break; case 1: cout << "(" << i << "/" << j << ")" << "-" << "(" << x << "/" << y << ")" << "="; a[p][0] = i*y - x*j; a[p][1] = j*y; check1(n, a); break; case 2: cout << "(" << i << "/" << j << ")" << "*" << "(" << x << "/" << y << ")" << "="; a[p][0] = i*x; a[p][1] = j*y; check1(n, a); break; case 3: cout << "(" << i << "/" << j << ")" << "/" << "(" << x << "/" << y << ")" << "="; a[p][0] = i*y; a[p][1] = j*x; check1(n, a); break; } } float t = (float)r / (float)n; cout << "正确率:" << 100 * t << "%" << endl; }
| PSP2.1 | Personal Software Process Stages | Time (%) Senior Student | Time (%) |
| Planning | 计划 | 8 | 6 |
| · Estimate | 估计这个任务需要多少时间 | 8 | 6 |
| Development | 开发 | 82 | 88 |
| · Analysis | 需求分析 (包括学习新技术) | 6 | 10 |
| · Design Spec | 生成设计文档 | 5 | 18 |
| · Design Review | 设计复审 | 4 | 12 |
| · Coding Standard | 代码规范 | 3 | 30 |
| · Design | 具体设计 | 10 | 12 |
| · Coding | 具体编码 | 36 | 21 |
| · Code Review | 代码复审 | 7 | 15 |
| · Test | 测试（自我测试，修改代码，提交修改） | 13 | 21 |
| Reporting | 报告 | 9 | 60 |
| · | 测试报告 | 3 | 20 |
| · | 计算工作量 | 2 | 10 |
| · | 并提出过程改进计划 | 3 | 30 |