生成50道100以内加法/减法算式的习题

废话咱们就不多讲了，直接上代码，看完的老铁记得给个收藏关注❤~。

下面这两个平台也求一波关注，最近两年内有更新💗

bilibili：羊卓的杨（链接🔗）
新浪微博：羊卓的杨（链接🔗）

#include <iostream>
#include <ctime>
#include <cmath>
#include <cstring>
using namespace std;void showMainMenu(int left, int right);//显示主菜单
void showExercise(int left, int right);//显示习题
void createExercise(int left, int right);//设计习题
void caculateAnswer(int left, int right);//计算答案
void showAnswer(int left, int right);//显示答案
int getRandom();//获取随机数
int same_judge[200];int main() {int choice=0;memset(same_judge,0,sizeof(same_judge));//为查重数组赋初始值 do {if(choice==1)system("cls");int left, right;left = getRandom();right = left+1000;showMainMenu(left, right);cout << "\n\n\t\t\t\t    ========是否还要继续进行操作?（1:继续 | 0:退出）========" << endl;cin >> choice;memset(same_judge,0,sizeof(same_judge));} while(choice);return 0;
}void showMainMenu(int left, int right) {//主菜单显示cout << "\t\t\t\t\t\t---------口算习题----------" << endl;cout << "\t\t\t\t\t\t|      1.生成口算题(两套) |" << endl;cout << "\t\t\t\t\t\t|      2.显示答案         |" << endl;cout << "\t\t\t\t\t\t|      3.退出             |" << endl;cout << "\t\t\t\t\t\t---------------------------" << endl;char choice;cin >> choice;while((choice-'0')<1 || (choice-'0')>3 || !(isdigit(choice))) {cout << "请正确输入：" << endl;cin >> choice;}switch(choice) {case '1':showExercise(left, right);break;case '2':showAnswer(left, right);break;case '3':exit(-1);}
}int getRandom() {//获取随机数int left;do {srand(time(0));left = (rand()+26314)%10000;} while(left<=1000);return left;
}void showExercise(int left, int right) {//习题显示cout << "\t\t\t\t\t\t================================" << endl;cout << "\t\t\t\t\t\t|50道100以内的混合加减运算（一)|" << endl;cout << "\t\t\t\t\t\t================================" << endl;createExercise(left, right);//cout << "QQ:653731317" << endl;cout << "\n\t\t\t\t\t\t================================" << endl;cout << "\t\t\t\t\t\t|50道100以内的混合加减运算（二)|" << endl;cout << "\t\t\t\t\t\t================================" << endl;createExercise(left+123, right+567);//羊卓的杨 -> 杨卓 -> 青岛大学Java班 
}void createExercise(int left, int right) { //设计习题int a,b, total=1, flag=0;for(int i=left; i<right, total<51; i++) {srand(i);a = rand()%100;b = rand()/100%100;if(a==0 || b==0)continue;if(flag==0)//格式对齐cout << "\t\t\t\t";flag=1;if(same_judge[a+b]!=0)//查重continue;if(a+b>100 && a>b) {same_judge[a+b]=a-b;//记录下啦这组数printf("%2d:%2d-%2d=    ",total,a,b);if(total%5==0 && total!=50)//格式换行对齐cout << "\n\t\t\t\t";total++;} else if(a+b<100) {same_judge[a+b]=a-b;//记录下来这组数printf("%2d:%2d+%2d=    ",total,a,b);if(total%5==0 && total!=50)//格式换行对齐cout << "\n\t\t\t\t";total++;}}//cout << "微博：羊卓的杨" << endl;
}void showAnswer(int left, int right) {//答案显示cout << "\t\t\t\t\t\t================================" << endl;cout << "\t\t\t\t\t\t|     第一套习题参考答案：     |" << endl;cout << "\t\t\t\t\t\t================================" << endl;caculateAnswer(left, right);cout << "\n\t\t\t\t\t\t================================" << endl;cout << "\t\t\t\t\t\t|     第二套习题参考答案：     |" << endl;cout << "\t\t\t\t\t\t================================" << endl;caculateAnswer(left+123, right+567);//羊卓的杨 -> 杨卓 -> 青岛大学Java班 
}void caculateAnswer(int left, int right) { //计算答案int a,b, total=1, flag=0;for(int i=left; i<right, total<51; i++) {srand(i);a = rand()%100;b = rand()/100%100;if(a==0 || b==0)continue;if(flag==0)//格式对齐cout << "\t\t\t\t";flag=1;if(same_judge[a+b]!=0)//查重continue;if(a+b>100 && a>b) {same_judge[a+b]=a-b;//记录下来这组数printf("%2d:%2d-%2d=%2d    ",total,a,b,a-b);if(total%5==0 && total!=50)//格式换行对齐cout << "\n\t\t\t\t";total++;} else if(a+b<100) {same_judge[a+b]=a-b;//记录下来这组数printf("%2d:%2d+%2d=%2d    ",total,a,b,a+b);if(total%5==0 && total!=50)//格式换行对齐cout << "\n\t\t\t\t";total++;}//cout << "bilibili:羊卓的杨\n" << endl;}
}