如何忽略istream字符串的

有没有人对我如何忽略来自istream的"n"有任何建议?我试图从文本文件中提取数据，其中在一些"单元格"中，文本已经写入，当用户按下Enter时，会出现"n"。

我的目标是接收文本的某些部分，并使用";"把各个部分分开。然而，在这样做时，有时会吸入"n"，并且输出单元格开始继续向下，而不是从右到左(这是首选)。

任何建议将不胜感激!

string vectorToString(vector<size_t> positionVector, string mainString,
                                      string outputString, int numLetters)
{
    //Check how many different positions were found and make that the length
    //of the vector that will store all the strings for each finding
    int positionVectorLength = positionVector.size();
    //foundPos is the position of the cursor along the foundPositions vector
    int vectorPosition=0;
    while (vectorPosition < positionVectorLength)
    {
        //define local variable that will store the value along the vector
        size_t vectorPositionValue = positionVector.at(vectorPosition);

        //append the numLetters after the positionValue in string frameNum
        outputString.append(mainString, vectorPositionValue, numLetters);
        outputString.append(" ; ");     
        //reiterate until all the positions have been recorded
        vectorPosition+=1;
    }
    //return the string of frame numbers
    return(outputString);
}