一、代码规范重写30道四则运算
/** 题目:30道2年纪四则运算题目 */ #include <iostream.h> #include <stdlib.h> #include <conio.h> int main() { //初始化 int a,b,c; int num1,num2; int num; int chufa; int k,jiange; int zhengchu; int j=0; int chengfa; int con; //请输入数的范围,中间用空格隔开: cout<<"请输入数的范围,中间用空格隔开:"; cin>>num1>>num2; if(num1>num2) { cout<<"第一个数应该小于第二个数,请重输:"; cin>>num1>>num2; } //控制题目的个数,num cout<<"其输入要出多少道题目:"; cin>>num; if(num>(4*(num2-num1)^2)) { cout<<"您输入的题目数量太多,会造成重复,请重新输入数目:"; cin>>num; } //打印格式 cout<<"一行几道题,行间距是几,中间空格:"; cin>>k>>jiange; if(jiange>=5||jiange<0) { cout<<"您输入的间距太大或为负数,请重输:"; cin>>jiange; } //是否要除法 cout<<"是否要除法?是输入1,否输入0:"; cin>>chufa; if(chufa==1) { cout<<"是否要有余数,是输入1,否输0:"; cin>>zhengchu; } //是否要乘法 cout<<"是否要乘法,是输入1,否输入0:"; cin>>chengfa; cout<<endl; for(int i=0;i<num;i++) { cout<<i+1<<"、"; a=(rand()%(num2-num1+1))+num1; b=(rand()%(num2-num1+1))+num1; if(chufa==1) { if(chengfa==1) { c=rand()%4;//0-3 } else { c=rand()%3;//0-2 } } else { if(chengfa==1) { c=rand()%3+1;//1-3 } else { c=rand()%2+1;//1-2 } } switch (c) { case 1: cout<<a<<"+"<<b<<"="<<"\t"; break; case 2: if(a>b) { cout<<a<<"-"<<b<<"="<<"\t"; } else { cout<<b<<"-"<<a<<"="<<"\t"; } break; case 3: cout<<a<<"*"<<b<<"="<<"\t"; break; case 0://除法 if(zhengchu==1)//有余数 { if(b==0) { cout<<b<<"/"<<a<<"="<<"\t"; } else { cout<<a<<"/"<<b<<"="<<"\t"; } } else { while((j<100000)&&(a!=0)&&(b!=0)&&(a%b==0)) { cout<<a<<"/"<<b<<"="<<"\t"; j++; } if((a!=0)&&(b!=0)&&(a%b==0)) { cout<<a<<"/"<<b<<"="<<"\t"; //i++; } else { int j=0; while(j<100000) { a=(rand()%(num2-num1+1))+num1; b=(rand()%(num2-num1+1))+num1; if((a!=0)&&(b!=0)&&(a%b==0)) { cout<<a<<"/"<<b<<"="<<"\t"; //i++; j=100000; j++; } else { j++; } } } } break; } if((i+1)%k==0) { cout<<endl; for(int m=0;m<jiange;m++) { cout<<endl; } } } //继续吗? cout<<"继续吗?是输入1,否输入0:"<<endl; cin>>con; if(con==1) { cout<<endl; main(); } else { return 0; } getch(); return 0; } |