用逗号输入整数

istringstream mystr（" 380,900"，istringstream :: in）; mystr>> mynum; cout<< mynum; 收益率" 380"。 How to do? Such a simple #@%^&@ thing and I''m spending hours on it. For example, long mynum; istringstream mystr("380,900", istringstream::in); mystr >> mynum; cout << mynum; yields "380". 正确地说，你只读第一个数字; - ） 除此之外你可以把逗号读成char： char c; long mynum1，mynum2; mystr>> mynum1>> c>> mynum2; HTH， Malte And correctly so, you''re only reading the first number ;-)Apart from that you could just read the comma into a char:char c;long mynum1, mynum2;mystr >> mynum1 >> c >> mynum2; HTH,Malte Malte Starostik schrieb： Malte Starostik schrieb: Randy Yates schrieb： Randy Yates schrieb:怎么办？这么简单＃@％^& @的东西，我花了好几个小时。例如， long mynum; istringstream mystr（ 380,900，istringstream :: in）; mystr>> mynum; cout<< mynum; 收益率" 380"。 How to do? Such a simple #@%^&@ thing and I''m spending hours on it. For example, long mynum; istringstream mystr("380,900", istringstream::in); mystr >> mynum; cout << mynum; yields "380". 正确地说，你只读第一个数字; - ） And correctly so, you''re only reading the first number ;-) 抱歉，我认为逗号不应该分开单个 数字而是千分隔符？ （不习惯，在我的de_DE语言环境中 千分隔符是a。而小数点是a，） 在这种情况下可能是这样的： long mynum; istringstream mystr（" 380,900"，istringstream :: in）; for（mynum = 0; mystr;） { long tmp; if（mystr>> tmp）mynum + = tmp; char c; if（mystr>> c&& c ==''，''）mynum * = 1000; } cout<< mynum<< endl; 错误检查虽然非常不理想，但它读取的内容如 380，-900为379100,380,1,0为380001000等。 问候， Malte Sorry, I gather that comma is not supposed to separate individualnumbers but a thousand separator? (not used to that, in my de_DE localethe thousand separator is a . while a decimal point is a ,)In that case maybe something like this: long mynum;istringstream mystr("380,900", istringstream::in);for ( mynum = 0; mystr; ){long tmp;if (mystr >> tmp) mynum += tmp;char c;if (mystr >> c && c == '','' ) mynum *= 1000;}cout << mynum << endl; The error checking is quite suboptimal though and it reads things like380,-900 as 379100, 380,1,0 as 380001000 etc. Regards,Malte Malte Starostik< ma ******* ******@t-online.de>写道： Malte Starostik <ma*************@t-online.de> writes: Randy Yates schrieb： Randy Yates schrieb:怎么办？这么简单的＃@％^& @的东西，我花了好几个小时才开始。例如， long mynum; istringstream mystr（" 380,900"，istringstream :: in）; mystr>> mynum; cout<< mynum; 收益率380。正确地说，你只读了第一个数字 How to do? Such a simple #@%^&@ thing and I''m spending hours on it. For example, long mynum; istringstream mystr("380,900", istringstream::in); mystr >> mynum; cout << mynum; yields "380". And correctly so, you''re only reading the first number 我明白了。因此，当你的老板给你发电子邮件并询问 Hey Malte，请为公司野餐订购1,173件T恤， you比如说， 嘿老板，这是1或173？ ;（ ;-) 除此之外你可以把逗号读成char： char c; long mynum1，mynum2; mystr>> mynum1>> c>> mynum2; 正如我所说，我知道有各种各样的方法 - 我正在寻找 优雅/正确的方式。 HTH， 不是真的。 Malte I see. So when your boss emails you and asks "Hey Malte, please order 1,173 T-Shirts for the company picnic", you say, "Hey boss, which is it, 1 or 173?" ;( ;-) Apart from that you could just read the comma into a char: char c; long mynum1, mynum2; mystr >> mynum1 >> c >> mynum2;As I said, I know there are ways AROUND it - I was looking for theelegant/proper way. HTH,Not really. Malte - ％Randy Yates％"也许有一天我会感受到她冷酷的拥抱， %% Fuquay-Varina，NC％并亲吻她的界面， ％ %% 919-577-9882％直到那时，我会离开她。 %%%%< ya *** @ ieee.org> ％''你的真实，2095'，*时间*，ELO http： //home.earthlink.net/~yatescr 这篇关于用逗号输入整数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！