字符串比較是怪異

Question

我一直都在這裏折磨我的大腦：

cout << orig << " * " << count << endl; 
string check = multiply2(orig, count); 
cout << "Check was: " << check << " and number is: " << number << endl; 
cout << "the compare result: " << check.compare(number) << endl; 
if(check.compare(number) == 0) 
{ 
    cout << "wahoo it matches!!! we did it! " << endl; 
} 
else 
{ 
    cout << "Doesnt Match " << endl; 
} 

我期待它來搭配和打印wahoo it matches!!! we did it!但與其說它不匹配。

這裏是我的輸出：

1 * 900000 
Check was: 900000 and number is: 90000 
the compare result: 1 
Doesnt Match 

任何人有任何想法，爲什麼他們arent匹配？

Answer 1

您比較900000（如9E5）與90000（如9E4）。電腦是對的。