Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://www.tutorialspoint.com/cpp_standard_library/cpp_basic_ios_getline.htm below:

C++ istream::getline() function

The C++ std::istream::getline() function is used to read a line of text from an input stream into a string or character array. It stops reading when it encounters a newline character or reaches the specified maximum number of characters, whichever comes first. The newline character is extracted but not stored.

It is useful for handling input that may contain spaces or other whitespace characters,as it captures the entire line.

Following is the syntax for std::istream::getline() function.

istream& getline (char* s, streamsize n );
istream& getline (char* s, streamsize n, char delim );

• s − It indicates the pointer to an array of characters where extracted characters are stored as a c-string.
• n − It indicates the maximum number of characters to write to s (including the terminating null character).
• delim − It indicaets the explicit delimiting character

This function returns the basic_istream object (*this).

If an exception is thrown, the object is in a valid state.

Modifies the elements in the array pointed by s and the stream object.

In the following example, we are going to consider the basic usage of the getline() function.

#include <iostream>
int main()
{
    char x[20];
    std::cout << "Enter a line of text: ";
    std::cin.getline(x, 20);
    std::cout << "Entered Input : " << x << std::endl;
    return 0;
}

Output of the above code is as follows −

Enter a line of text:  Hello, Namaste
Entered Input :  Hello, Namaste

Consider the following example, where we are going to handle the empty input.

#include <iostream>
int main()
{
    char buffer[10];
    std::cout << "Enter a text or press Enter : ";
    std::cin.getline(buffer, 10);
    if (buffer[0] == '\0') {
        std::cout << "No Input Provided." << std::endl;
    } else {
        std::cout << "Entered Input : " << buffer << std::endl;
    }
    return 0;
}

Following is the output of the above code −

Enter a text or press Enter : 
No Input Provided.

istream.htm

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4