四则运算题目生成程序
目录
一、作业信息
二.题目要求
三.代码提交
一、作业信息
| 博客班级 | AHPU-软件工程导论-计算机18级 (安徽工程大学 - 计算机与信息学院) |
|---|---|
| 作业要求 | 四则运算题目生成程序 |
| 作业目标 | 练习编译能力，提高编译能力 |
| 学号 | 3180701335 |
二.题目要求
写一个能自动生成小学四则运算题目的程序，然后在此基础上扩展：
1）除了整数以外，还要支持真分数的四则运算，例如：1/6 1/8=7/24
2）程序要求能处理用户的输入，判断对错，累积分数
3）程序支持可以由用户自行选择加、减、乘、除运算
4）使用-n参数控制生成题目的个数，例如Myapp.exe -n 10，将生成10个题目
三.代码提交
头文件
#include"stdio.h"#include"stdlib.h"#include"time.h"#include"math.h"#include"string.h"
主菜单
void menu(){printf("四则运算题目生成程序\n");printf("输入要生成的题目类型\n");printf("1.加法算法(整数)\n");printf("2.减法算法(整数)\n");printf("3.乘法算法(整数)\n");printf("4.除法算法(整数)\n");printf("5.加法算法(真分数)\n");printf("6.减法算法(真分数)\n");printf("7.乘法算法(真分数)\n");printf("8.除法算法(真分数)\n");printf("0.退出\n");printf("请输入0——8\n");}
最大公约数
int func(int m, int n) //求最大公约数{int tmp;m = abs(m);n = abs(n);if (m == n)return m;if (m < n){tmp = m;m = n;n = tmp;}while (m % n != 0){tmp = m;m = n;n = tmp % n;}return n;}
整数加法
int IAddition(int G=0)//加法算法题目生成与处理{int i;//i 生成的题目数量int x, y, z1 = 0, z2;//x,y为生成的数字用于加法计算，z1是输入的结果，z2是答案。printf("请输入要生成的题目数量：");scanf_s("%d", &i);for (int j = 0; j < i; j ){srand((unsigned)time(NULL));x = rand() % 100;y = rand() % 100;z2 = x y;printf("%d %d=?", x, y);printf("请输入答案:");scanf_s("%d", &z1);if (z1 == z2){printf("答案正确。\n");G = 1;}elseprintf("答案错误，正确答案为%d\n", z2);}return G;}
整数减法
int ISubtraction(int G=0){int i;//i 生成的题目数量int x, y, z1 = 0, z2;//x,y为生成的数字用于减法计算，z1是输入的结果，z2是答案。printf("请输入要生成的题目数量：");scanf_s("%d", &i);for (int j = 0; j < i; j ){srand((unsigned)time(NULL));x = rand() % 100;y = rand() % 100;z2 = x - y;printf("%d-%d=?", x, y);printf("请输入答案:");scanf_s("%d", &z1);if (z1 == z2){printf("答案正确。\n");G = 1;}elseprintf("答案错误，正确答案为%d\n", z2);}return G;}
整数乘法
int IMultiplication(int G=0){int i;//i 生成的题目数量int x, y, z1 = 0, z2;//x,y为生成的数字用于乘法计算，z1是输入的结果，z2是答案。printf("请输入要生成的题目数量：");scanf_s("%d", &i);for (int j = 0; j < i; j ){srand((unsigned)time(NULL));x = rand() % 100;y = rand() % 100;z2 = x * y;printf("%d*%d=?", x, y);printf("请输入答案:");scanf_s("%d", &z1);if (z1 == z2){printf("答案正确。\n");G = 1;}elseprintf("答案错误，正确答案为%d\n", z2);}return G;}
整数除法
int IDivision(int G=0){int i;//i 生成的题目数量int x, y, z1 = 0, z2;//x,y为生成的数字用于除法计算，z1是输入的结果，z2是答案。printf("请输入要生成的题目数量：");scanf_s("%d", &i);for (int j = 0; j < i; j ){srand((unsigned)time(NULL));x = rand() % 100;y = rand() % 100;z2 = x / y;printf("%d/%d=?", x, y);printf("请输入答案:");scanf_s("%d", &z1);if (z1 == z2){printf("答案正确。\n");G = 1;}elseprintf("答案错误，正确答案为%d\n", z2);}return G;}
分数加法
int SAddition(int G=0){int flag = 0;int i;//i 生成的题目数量int x1, x2, y1, y2,Mcon,Mcon1;//x1,x2为分子,y1，y2为生成的分母数字用于加法计算.int z1=0, z2=0, z3=0, z4=0;//z1是输入的分子，z2是分母 z3是答案的分子，z4是答案的分母。printf("请输入要生成的题目数量：");scanf_s("%d", &i);for (int j = 0; j < i; j ){srand((unsigned)time(NULL));x1 = rand() % 10;x2 = rand() % 10;y1 = rand() % 10;y2 = rand() % 10;printf("%d/%d %d/%d=?", x1,y1,x2,y2);printf("请输入答案的分子:");scanf_s("%d", &z1);printf("请输入答案的分母:");scanf_s("%d",&z2);Mcon1 = func(y1, y2);Mcon = y1 * y2;z4 = Mcon;z3 = Mcon / y1 * x1 Mcon / y2 * x2;if (z1 == (z3=z3/Mcon1) && z2 == (z4=z4/Mcon1)){printf("答案正确。\n");G = 1;}elseprintf("答案错误，正确答案为%d/%d\n",z1,z4 );}return G;}
分数减法
int SSubtraction(int G=0){int flag = 0;int i;//i 生成的题目数量int x1, x2, y1, y2, Mcon,Mcon1;//x1,x2为分子,y1，y2为生成的分母数字用于加法计算.int z1 = 0, z2 = 0, z3 = 0, z4 = 0;//z1是输入的分子，z2是分母 z3是答案的分子，z4是答案的分母。printf("请输入要生成的题目数量：");scanf_s("%d", &i);for (int j = 0; j < i; j ){srand((unsigned)time(NULL));x1 = rand() % 10;x2 = rand() % 10;y1 = rand() % 10;y2 = rand() % 10;printf("%d/%d-%d/%d=?", x1, x2, y1, y2);printf("请输入答案的分子:");scanf_s("%d", &z1);printf("请输入答案的分母:");scanf_s("%d", &z2);Mcon1 = func(y1, y2);Mcon = y1 * y2;z4 = Mcon;z3 = Mcon / y1 * x1 - Mcon / y2 * x2;if (z1 == (z3 = z3 / Mcon1) && z2 == (z4 = z4 / Mcon1)){printf("答案正确。\n");G = 1;}elseprintf("答案错误，正确答案为%d/%d\n", z3, z4);}return G;}
分数乘法
int SMultiplication(int G=0){int i;//i 生成的题目数量int x1, x2, y1, y2, Mcon,Mcon1;//x1,x2为分子,y1，y2为生成的分母数字用于加法计算.int z1 = 0, z2 = 0, z3 = 0, z4 = 0;//z1是输入的分子，z2是分母 z3是答案的分子，z4是答案的分母。printf("请输入要生成的题目数量：");scanf_s("%d", &i);for (int j = 0; j < i; j ){srand((unsigned)time(NULL));x1 = rand() % 10;x2 = rand() % 10;y1 = rand() % 10;y2 = rand() % 10;printf("%d/%d*%d/%d=?", x1, x2, y1, y2);printf("请输入答案的分子:");scanf_s("%d", &z1);printf("请输入答案的分母:");scanf_s("%d", &z2);Mcon1 = func(y1, y2);Mcon = y1 * y2;z4 = Mcon;z3 = (Mcon / y1 * x1) * (Mcon / y2 * x2);if (z1 == (z3 = z3 / Mcon1) && z2 == (z4 = z4 / Mcon1)){printf("答案正确。\n");G = 1;}elseprintf("答案错误，正确答案为%d/%d\n", z3, z4);}return G;}
分数除法
int SDivision(int G=0){int i;//i 生成的题目数量int x1, x2, y1, y2, Mcon,Mcon1;//x1,x2为分子,y1，y2为生成的分母数字用于加法计算.int z1 = 0, z2 = 0, z3 = 0, z4 = 0;//z1是输入的分子，z2是分母 z3是答案的分子，z4是答案的分母。printf("请输入要生成的题目数量：");scanf_s("%d", &i);for (int j = 0; j < i; j ){srand((unsigned)time(NULL));x1 = rand() % 10;x2 = rand() % 10;y1 = rand() % 10;y2 = rand() % 10;printf("%d/%d / %d/%d=?", x1, x2, y1, y2);printf("请输入答案的分子:");scanf_s("%d", &z1);printf("请输入答案的分母:");scanf_s("%d", &z2);Mcon1 = func(y1, y2);Mcon = y1 * y2;z4 = Mcon;z3 = (Mcon / y1 * x1) /( Mcon / y2 * x2);if (z1 == (z3 = z3 / Mcon1) && z2 == (z4 = z4 / Mcon1)){printf("答案正确。\n");G = 1;}elseprintf("答案错误，正确答案为%d/%d\n", z3, z4);}return G;}
主函数
int main(){int number, grade1 = 0, grade2 = 0;while (1){menu();scanf_s("%d", &number);switch (number){case 1: grade2 = IAddition(grade1); break;case 2: grade2 = ISubtraction(grade1); break;case 3: grade2 = IMultiplication(grade1); break;case 4: grade2 = IDivision(grade1); break;case 5: grade2 = SAddition(grade1); break;case 6: grade2 = SSubtraction(grade1); break;case 7: grade2 = SMultiplication(grade1); break;case 8: grade2 = SDivision(grade1); break;case 0: exit(0);default: printf("error"); break;}printf("\n最后得分为：%d\n\n", grade2);}}
运行截图
个人小结
1.psp表格
| psp2.1 | 任务内容 | 计划完成需要的时间（min） | 实际完成需要的时间（min） |
|---|---|---|---|
| Planing | 计划 | 40 | 40 |
| Estimate | 估计这个任务需要多少时间， 并规划大致工作步骤 |
500 | 300 |
| Development | 开发 | 200 | 200 |
| Analysis | 需求分析（包括学习新技能） | 120 | 90 |
| Design Spec | 生成设计文档 | 15 | 25 |
| Design Review | 设计审核 | 20 | 10 |
| Coding Standard | 代码规范 | 20 | 15 |
| Design | 具体设计 | 15 | 14 |
| Coding | 具体编码 | 500 | 400 |
| Code Review | 代码复核 | 30 | 20 |
| Test | 测试（自我测试，修改代码 提交修改） |
50 | 50 |
| Reporting | 报告 | 30 | 30 |
| Test Report | 测试报告 | 5 | 15 |
| Size Measurement | 计算工作量 | 30 | 25 |
| Postmortem & Process Improvement |
事后总结，并提出过程修改计划 | 10 | 15 |
2、个人小结
经过这次编程练习，发现了许多的不足之处，编程能力有待提高，改错能力也有待提高。争取在这几次的编程练习中大幅度提高编程能力。
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