C++奇怪的乱码

有没有大神帮我解释一下为啥这个程序把我的调色都卡掉了…… 

//
//Created by Carlgood.
//
//Note:This program is written in version DEV-C++ 5.11.
# include<iostream>
# include<cmath>
# include<string>
# include<cstring>
# include<cstdio>
# include<algorithm>
# include<sstream>
# include<iomanip>
# include<vector>
# include<queue>
# include<deque>
# include<stack>
# include<stdio.h>
# include<windows.h>
# include<ctime> 
# define This_program_is_written_by_Carlgood_Programming_Studio 9876543210
using namespace std;
int main()
{
	srand(time(0));
	system("cls");
	system("title Oops!");
	system("color 2");
	while(1)
	{
		int c;
		long long a;
		int xz=rand()%2;
		if(xz==1)
		{ 
			c=rand()%126;
			cout<<char(c);
		}
		else if(xz==2)
		{
			a=rand()%9223372036854775807+1;
			cout<<a;
		}
	}
	return 0;
}