您好,整了好一会儿发现用getline()输入字符串就会报 错误20%,想请教一下楼上有碰到过吗? 下面是我的代码: #include <iostream> #include <cctype> #include <string> #include <algorithm> using namespace std; int main() { string a, b; getline(cin, a); getline(cin, b); if (a.size() != b.size()) cout << 1 << endl; else if (a == b) cout << 2 << endl; else { transform(a.begin(), a.end(), a.begin(), ::toupper); transform(b.begin(), b.end(), b.begin(), ::toupper); if (a == b) cout << 3 << endl; else cout << 4 << endl; } return 0; }