实现彩色文字

#include <windows.h> 
#include<time.h>
//GetStdHandle和SetConsoleTextAttribute在头文件windows.h中 
#include <iostream> 
using namespace std; 
void SetColor(unsigned short ForeColor=3,unsigned short BackGroundColor=0) 
//给参数默认值，使它　
//可以接受0/1/2个参数 
{ 
HANDLE hCon = GetStdHandle(STD_OUTPUT_HANDLE); //本例以输出为例 
SetConsoleTextAttribute(hCon,ForeColor|BackGroundColor); 
}
int main() 
{ 
    srand(time(NULL)*100);
    
SetColor(); 
std::cout<<"Hello world!"<<endl; 
SetColor(40,30); 
std::cout<<"Hello world!"<<endl; 
SetColor(10,200); 
std::cout<<"Hello world!"<<endl; 
for(int i=1;i<=10000;i++)
{
    int a1,a2;
    a1=rand()%20;
    a2=rand()%20;
    SetColor(a1,a2); 
    cout<<a1<<":"<<a2<<endl;
std::cout<<"Hello world!"<<endl; 

Sleep(50);
}
return 0;
}