why?left shift count >= width of type

[erwin_diow]

when I build the code as following:

Code

#include <iostream>

using namespace std;

int main()
{
    cout << "请输入一个大于1的整数：" << endl;
    int x;
    cin>>x;
    if(x>1 || x<<99)
        cout<<"x大于1或小于100\n";
    else
        cout<<"x大于或者等于100\n";
    return 0;
}

there is a warning

[MortenMacFly]

there is a warning

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