新冠病毒肺炎疫情 各省级行政区占比、治愈率、死亡率的分析

#include <iostream>
#include <iomanip>
using namespace std;

int total1=0,total2=0;

struct Provinces
{
	string Province;
	int Diagnosis;
	int Cured;
	int Dead;
};

void Input(Provinces ProvincesList[],int & total)
{
	int i=1;
	cout<<"请录入34个省级行政区的疫情信息:\n省 确诊 治愈 死亡"<<endl; 
	while(1)
	{	
		cout<<"第"<<i<<"个:"<<endl;
		cin>>ProvincesList[i].Province;
		cin>>ProvincesList[i].Diagnosis>>ProvincesList[i].Cured>>ProvincesList[i].Dead;
		total=total+ProvincesList[i].Diagnosis;
		total1=total1+ProvincesList[i].Cured;
		total2=total2+ProvincesList[i].Dead;
		i++;
		if(i>34)
		{
			cout<<"录入完毕"<<endl;
			break;
		}
	}
}

void Output(Provinces ProvincesList[],int total)
{
	cout<<"--------------------------------------------------------"<<endl; 
	cout<<"全国\n确诊:"<<total<<"\n治愈:"<<total1<<"\n死亡:"<<total2<<"\n治愈率:"<<setiosflags(ios::fixed)<<setprecision(2)<<(double)total1/total*100<<"%"<<"\n死亡率:"<<(double)total2/total*100<<"%"<<endl;
	cout<<"--------------------------------------------------------"<<endl; 
	cout<<"省\t确诊\t治愈\t死亡\t占比\t治愈率\t死亡率"<<endl; 
	int i=1;
	while(1)
	{	
		cout<<ProvincesList[i].Province<<"\t"<<ProvincesList[i].Diagnosis<<"\t"<<ProvincesList[i].Cured<<"\t"<<ProvincesList[i].Dead<<"\t"<<setiosflags(ios::fixed)<<setprecision(2)<<(double)ProvincesList[i].Diagnosis/total*100<<"%\t"<<(double)ProvincesList[i].Cured/ProvincesList[i].Diagnosis*100<<"%\t"<<(double)ProvincesList[i].Dead/ProvincesList[i].Diagnosis*100<<"%"<<endl; 
		i++;
		if(i>34)
		{
			cout<<"--------------------------------------------------------"<<endl; 
			break;
		}
	}
}

int main()
{
	Provinces ProvincesList[100];int total=0;
	Input(ProvincesList,total);
	Output(ProvincesList,total);
}

总结：
#include <iomanip>

struct Provinces
{
	
};//结构体 分号

void Input(Provinces ProvincesList[],int & total)
//数组作为函数参数无需引用&，因为数组名就是地址，无需取地址

setiosflags(ios::fixed)<<setprecision(2)<<(double)total1/total*100<<"%"