c++ - cin输入时按回车结束

Question

vector<string> ivec;
    string str;
    while(cin >> str)
        ivec.push_back(str);

请问如何实现输入数据按回车结束，而不是crtl +z

Answer 1

This question should not determine whether str is equal to 'n' or "n", but should determine whether str is empty, that is,

vector<string> ivec;
string str;
while(getline(cin, str))
  if (str.empty()) break;
  ivec.push_back(str);

Cause: When you don’t enter any characters and just hit Enter, getline only encounters a newline character, and getline extracts and discards it, so str is empty.

Answer 2

while(cin>>str){
    if(str等于换行){
        break;
    }
    ivec.push_back(str);
}