c++实验设计 小学数学测试软件(3)

【2-3-3】

乘法如图【2-3-4】所示

【2-3-4】

运行结果如图【2-3-5】所示

【2-3-5】

3.3 源程序清单（关键代码）

#define _CRT_SECURE_NO_WARNINGS #include #include #include using namespace std; int main() {

srand(time(NULL)); int type; int exitFlag = 1; while (exitFlag) {

while (1) {

system(\

cout << \请输入编号选择题目类型：\\n1.加法\\n2.减法

\\n3.乘法\\n你的选择：\

endl;

break; }

cout << \请输入需要的题目数目：\int nQues; cin >> nQues; int nCorr = 0; system(\

for (int i = 0; i < nQues; ++i) {

int p1, p2, ans; p1 = rand() % 100; switch (type) { case 1:

p2 = rand() % 100;

cout << \进度：\cin >> ans; if (ans == p1 + p2) { } else

cout << \正确答案是：\cout << \nCorr++; cin >> type;

if (type <= 3 && type >= 1) break;

<< p1 << \

case 2:

p2 = rand() % (p1 + 1);

cout << \进度：\

<< p1 << \

endl;

endl;

} break; break;

p1 = rand() % 20; p2 = rand() % 20;

cout << \进度：\cin >> ans; if (ans == p1 * p2) { } else

cout << \正确答案是：\cout << \nCorr++; case 3:

cin >> ans; if (ans == p1 - p2) { } else

cout << \正确答案是：\cout << \nCorr++;

<< p1 << \