1.1具体任务

1.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

2.运算符为 +, −, ×, ÷

3.并且要求能处理用户的输入，并判断对错，打分统计正确率。

4.要求能处理用户输入的真分数， 如 1/2, 5/12 等

5.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
Myapp.exe -n 10

源代码：

int maxNum(int i, int j) //最大公约数

{

int k;

if ((k = i % j) != 0)

{

maxNum(j, k);

}

else

return j;

}

int main()

{

int n, c, a = 0;

srand(time(NULL));

cin >> n;

for (int i = 0; i < n; i++)

{

int x1, x2, z, t, y1, y2, c, r1, r2;

char r3[10], r4[10];

srand(time(NULL));

memset(r3, 0, sizeof(r3));

memset(r4, 0, sizeof(r4));

x1 = rand() % 100;

x2 = rand() % 100;

z = rand() % 4;

r1 = 0;

r2 = 0;

switch (z)

{

case 0:

cout << x1 << "+" << x2 << "=";

cin >> r1;

r2 = x1 + x2;

if (r1 == r2)

{

cout << " 正" << endl;

a = a + 1;

}

else cout << " 误" << endl;

break;

case 1:

if (x1 < x2)

{

t = x1;

x1 = x2;

x2 = t;

}

else;

cout << x1 << "-" << x2 << "=";

cin >> r1;

r2 = x1 - x2;

if (r1 == r2)

{

cout << " 正" << endl;

a = a + 1;

}

else cout << " 误" << endl;

break;

case 2:

cout << x1 << "*" << x2 << "=";

cin >> r1;

r2 = x1 * x2;

if (r1 == r2)

{

cout << " 正" << endl;

a = a + 1;

}

else cout << " 误" << endl;

break;

case 3:

if (x2 != 0)

{

cout << x1 << "÷" << x2 << "=";

c = maxNum(x1, x2);

y1 = x1 / c;

y2 = x2 / c;

if (n != 1)

{

sprintf_s(r3, "%d/%d", y1, y2);

cin >> r4;

if (strcmp(r3, r4) == 0)

{

cout << " 正" << endl;

a = a + 1;

}

else cout << " 误" << endl;

}

else

{

cin >> r2;

if (r2 == y1)

{

cout << " 正" << endl;

a = a + 1;

}

else cout << " 误" << endl;

}

}

else

{

cout << x1 << "÷" << "1" << "=";

cin >> r2;

if (r2 == x1)

{

cout << " " << "T" << endl;

a = a + 1;

}

else cout << " " << "F" << endl;

}

break;

}

}

cout << "对的数量:" << a;

return 0;

}

|:--|:--|:--|:--|
|PSP2.1|Personal Software Process Stages|Time (%) Senior Student(/hour)|Time (%)(/hour)|
|· Planning|计划|3h|1.5h|
|· Estimate|估计这个任务需要多少时间|1h|50min|
|· Analysis|需求分析 (包括学习新技术)|1h|1h|
|· Coding Standard|代码规范|3h|2h|
|· Design|具体设计|4h|2h|
|· Coding|具体编码|30h|45h|
|· Test|测试（自我测试，修改代码，提交修改）|2h|1.5h|
|Reporting|报告|3h|2.5h|