getline - C++ Reference std::getline<string> istream& getline ( istream& is, string& str, char delim );
istream& getline ( istream& is, string& str ); Get line from stream Extracts characters from is and stores them into str until a delimitation character is found.
The delimiter character is delim for the first function version, and '\n' (newline character) for the second. The extraction also stops if the end of file is reached in is or if some other error occurs during the input operation.
If the delimiter is found, it is extracted and discarded, i.e. it is not stored and the next input operation will begin after it.
Notice that unlike the c-string versions of istream::getline, these string versions are implemented as global functions instead of members of the stream class.
Parameters - is
- istream object on which the extraction operation is performed.
- str
- string object where the extracted content is stored.
- delim
- The delimiting character. The operation of extracting successive characters is stopped when this character is read.
Return ValueThe same as parameter is.
Errors are signaled by modifying the internal state flags:
| flag | error |
|---|
| eofbit | The end of the source of characters is reached during its operations. | | failbit | No characters were extracted because the end was prematurely found.Notice that some eofbit cases will also set failbit. | | badbit | An error other than the above happened. |
Additionally, in any of these cases, if the appropriate flag has been set with is's member function ios::exceptions, an exception of type ios_base::failure is thrown.
Example1
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| // getline with strings
#include <iostream>
#include <string>
using namespace std;
int main () {
string str;
cout << "Please enter full name: ";
getline (cin,str);
cout << "Thank you, " << str << ".\n";
}
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