c++ string替换指定字符串

 

string fnd = "dataset";
string rep = "labels";
string buf = "d:/data/dataset/ii.jpg";
buf = buf.replace(buf.find(fnd), fnd.length(), rep);

 

去掉由于window下引入的 '/r' 字符

fstream fp("val.txt");
vector<string> fn_vec;
while(!fp.eof()){
    string buf;
    getline(fp, buf);
    if(buf.empty())
      continue;
    if (buf.find("\r") > 0)
      buf = buf.replace(buf.find("\r"), 1, "");
}
fp.close();