求问一个小小的c++的问题,#include #include #include using namespace std;int main(){vector lines;string s = "abc\nb\n\nc\n\n\ndef";string::size_type pos1 = 0;string::size_type pos2 = 0;if(s.find('\n') = string::npos){while( (pos2 = s.find_fir
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![求问一个小小的c++的问题,#include #include #include using namespace std;int main(){vector lines;string s =](/uploads/image/z/12659265-9-5.jpg?t=%E6%B1%82%E9%97%AE%E4%B8%80%E4%B8%AA%E5%B0%8F%E5%B0%8F%E7%9A%84c%2B%2B%E7%9A%84%E9%97%AE%E9%A2%98%2C%23include+%23include+%23include+using+namespace+std%3Bint+main%28%29%7Bvector+lines%3Bstring+s+%3D+%22abc%5Cnb%5Cn%5Cnc%5Cn%5Cn%5Cndef%22%3Bstring%3A%3Asize_type+pos1+%3D+0%3Bstring%3A%3Asize_type+pos2+%3D+0%3Bif%28s.find%28%27%5Cn%27%29+%3D+string%3A%3Anpos%29%7Bwhile%28+%28pos2+%3D+s.find_fir)
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