用C++分析新冠疫情数据

目录

• 代码部分
• 用户界面
• 数据来源及数据处理
• 数据展示

---

代码部分

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

int total1=0,total2=0,total3=0;

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

void Input(Provinces ProvincesList[],int & total)
{
	int i=1;total=0;total1=0;total2=0;total3=0; 
	cout<<"请录入34个省级行政区的疫情信息:\n省 新增 确诊 治愈 死亡"<<endl; 
	while(1)
	{	
		cout<<"第"<<i<<"个:"<<endl;
		cin>>ProvincesList[i].Province;
		cin>>ProvincesList[i].New>>ProvincesList[i].Diagnosis>>ProvincesList[i].Cured>>ProvincesList[i].Dead;
		total=total+ProvincesList[i].Diagnosis;
		total1=total1+ProvincesList[i].Cured;
		total2=total2+ProvincesList[i].Dead;
		total3=total3+ProvincesList[i].New;
		i++;
		if(i>34)
		{
			cout<<"录入完毕"<<endl;
			break;
		}
	}
}

void Output(Provinces ProvincesList[],int total)
{
	cout<<"---------------------------------------------------------------"<<endl; 
	cout<<"全国\n新增:"<<total3<<"\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新增\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].New<<"\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;
		}
	}
	cout<<"湖北以外"<<total3-ProvincesList[1].New<<"\t"<<total-ProvincesList[1].Diagnosis<<"\t"<<total1-ProvincesList[1].Cured<<"\t"<<total2-ProvincesList[1].Dead<<"\t"<<setiosflags(ios::fixed)<<setprecision(2)<<(double)(total-ProvincesList[1].Diagnosis)/total*100<<"%\t"<<(double)((total1-ProvincesList[1].Cured)/(double)(total-ProvincesList[1].Diagnosis))*100<<"%\t"<<(double)((total2-ProvincesList[1].Dead)/(double)(total-ProvincesList[1].Diagnosis))*100<<"%\t"<<endl;
}

void Input1(Provinces ProvincesList[],int & total)
{
	int i=1;total=0;total1=0;total2=0;total3=0;
	cout<<"请录入17个市的疫情信息:\n市 新增 确诊 治愈 死亡"<<endl; 
	while(1)
	{	
		cout<<"第"<<i<<"个:"<<endl;
		cin>>ProvincesList[i].Province;
		cin>>ProvincesList[i].New>>ProvincesList[i].Diagnosis>>ProvincesList[i].Cured>>ProvincesList[i].Dead;
		total=total+ProvincesList[i].Diagnosis;
		total1=total1+ProvincesList[i].Cured;
		total2=total2+ProvincesList[i].Dead;
		total3=total3+ProvincesList[i].New;
		i++;
		if(i>17)
		{
			cout<<"录入完毕"<<endl;
			break;
		}
	}
}

void Output1(Provinces ProvincesList[],int total)
{
	cout<<"---------------------------------------------------------------"<<endl; 
	cout<<"湖北\n新增:"<<total3<<"\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<<"市\t新增\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].New<<"\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>17)
		{
			cout<<"---------------------------------------------------------------"<<endl; 
			break;
		}
	}
	cout<<"武汉以外"<<total3-ProvincesList[1].New<<"\t"<<total-ProvincesList[1].Diagnosis<<"\t"<<total1-ProvincesList[1].Cured<<"\t"<<total2-ProvincesList[1].Dead<<"\t"<<setiosflags(ios::fixed)<<setprecision(2)<<(double)(total-ProvincesList[1].Diagnosis)/total*100<<"%\t"<<(double)((total1-ProvincesList[1].Cured)/(double)(total-ProvincesList[1].Diagnosis))*100<<"%\t"<<(double)((total2-ProvincesList[1].Dead)/(double)(total-ProvincesList[1].Diagnosis))*100<<"%\t"<<endl;
}

int main()
{
	Provinces ProvincesList[100];int total=0;
	while(1) 
	{
		cout<<"---------------------------------------------------------------"<<endl; 
		cout<<"新冠肺炎疫情分析系统\n1)全国分析\n2)湖北分析\n3)退出\n请选择要进行的操作:";
		char ch;
		cin>>ch;
		switch(ch)
		{
			case '1':Input(ProvincesList,total);
					 Output(ProvincesList,total);
					 system("pause");
					 break;
			case '2':Input1(ProvincesList,total);
					 Output1(ProvincesList,total);
					 system("pause");
					 break;
			case '3':exit(0); 
		}
	}
} 

用户界面

数据来源及数据处理

数据来源：百度-最新疫情地图实时数据报告

数据处理：在文本文档中将tab替换为空格，然后将“-”替换为“0”，复制粘贴即可。

数据展示

2月10日数据

2月11日数据

2月12日数据

2月13日数据

2月14日数据

2月15日数据

2月16日数据

2月17日数据

2月18日更新

2月19日数据

2月20日数据

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全国新型肺炎疫情最新数据接口

http://www.tianqiapi.com/index/doc?version=epidemic

使用JSON - 学习 Web 开发 | MDN

还可以增加一些功能：

保存历史数据

爬取数据

各项参数升序降序排列

自动生成文本报告

可视化界面

窗体

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<<"%"

system("pause");