標籤:
c++去掉首尾空格是參考一篇文章的,但是忘記文章出處了,就略過吧。
去掉首尾空格的代碼如下:
1 void trim(string &s) 2 { 3 4 if( !s.empty() ) 5 { 6 s.erase(0,s.find_first_not_of(" ")); 7 s.erase(s.find_last_not_of(" ") + 1); 8 } 9 10 }去掉首尾空格
去掉字串中所有空格的代碼如下:
1 void trim(string &s) 2 { 3 /* 4 if( !s.empty() ) 5 { 6 s.erase(0,s.find_first_not_of(" ")); 7 s.erase(s.find_last_not_of(" ") + 1); 8 } 9 */10 int index = 0;11 if( !s.empty())12 {13 while( (index = s.find(‘ ‘,index)) != string::npos)14 {15 s.erase(index,1);16 }17 }18 19 }去掉所有空格
測試代碼如下:
1 int main() 2 { 3 4 cout << "-------------------------------------" << endl; 5 6 string pri = " 7ter 09, jdhfd iere*- ddw jjdjjdj "; 7 cout << "private string is : \"" << pri << "\"" << endl; 8 trim(pri); 9 cout << "after string is : \"" << pri << "\"" << endl;10 11 cout << "-------------------------------------" << endl;12 13 return 0;14 }測試代碼
結果如:
C++去掉字串中首尾空格和所有空格