定义分数类，数据成员a和b表示分数的分子和分母，类中定义成员函数能够实现分数的加减乘除运算
input
首先是一个正整数n，表示有n组数据。每一组数据中由4个整形数组成，分别表示第一个分数的分子和分母和第二个分数的分子和分母。
output
两个加减乘除的结果
sampleinput
3
2 -4 3 5
1 2 3 4
4 3 2 -1
sampleoutput
1/10 11/10 -3/10 -5/6
5/4 -1/4 3/8 2/3
-2/3 10/3 -8/3 -2/3
1回答
-
asd8532
#include<iostream>
#include<cmath>
using namespace std;
class fraction{
public:
int above;
int below;
void reduction();
void makeCommond(fraction&);
public:
fraction(int a=0,int b=1){
above=a;below=b;
}
fraction add(fraction);
fraction sub(fraction);
fraction mul(fraction);
fraction div(fraction);
void display();
};
void fraction::reduction(){
int a,b,temp;
if(below<0){
above=-above;
below=-below;
}
a=abs(above);
b=abs(below);
while(a%b){
temp=a;
a=b;
b=temp%b;
}
above/=b;
below/=b;
}
void fraction::makeCommond(fraction& b){
int temp;
reduction();
b.reduction();
above*=b.below;
b.above*=below;
temp=below*b.below;
below=b.below=temp;
}
fraction fraction::add(fraction b){
fraction temp;
makeCommond(b);
temp.above=above+b.above;
temp.below=below;
temp.reduction();
return temp;
}
fraction fraction::sub(fraction b){
fraction temp;
makeCommond(b);
temp.above=above-b.above;
temp.below=below;
temp.reduction();
return temp;
}
fraction fraction::mul(fraction b){
fraction temp;
temp.above=above*b.above;
temp.below=below*b.below;
temp.reduction();
return temp;
}
fraction fraction::div(fraction b){
fraction temp;
if(b.above==0){
cout<<"零不能作除数！"<<endl;
exit(1);
}
temp.above=above*b.below;
temp.below=below*b.above;
temp.reduction();
return temp;
}
void fraction::display(){
reduction();
cout<<above<<"/"<<below<<" ";
}
int main(){
int n;
cin>>n;
while(n>=1){
fraction f1,f2;
cin>>f1.above>>f1.below>>f2.above>>f2.below;
fraction f3=f1.add(f2);
fraction f4=f1.sub(f2);
fraction f5=f1.mul(f2);
fraction f6=f1.div(f2);
f3.display();
f4.display();
f5.display();
f6.display();
cout<<endl;
}
return 0;
}