为什么在 for 循环中 if 似乎是真的它不打印语句（c++）

Question

sort(numb);
    cout << "Smallest value is: " << numb[0] << endl;
    cout << "Largest value is: " << numb[numb.size() - 1] << endl;
    for (i=0;i<numb.size();i++) {
        if(i>0){
            dif = numb[i] - numb[i-1]; cout<<" dif "<<dif<<endl;
            if (dif <= (1.0 / 100) && dif > 0||dif>=(-1.00/100)&&dif<0) {
                cout << "Numbers " << numb[i - 1] << " and " << numb[i] << " are almost equal\n";
            }
            else if (dif == 0) {
                equal.push_back(numb[i]);
            }
        }}