Differentiation of cin, cin. get (), cin. getline (), cin. getcin. getline

Differentiation of cin, cin. get (), cin. getline (), cin. getcin. getline

1 cin is mainly used to input numbers

# Include <iostream>
Using namespace std;
Main ()
{
Int a, B;
Cin> a> B;
Cout <a + B <endl;

Input: 1 Press enter 2 press ENTER
Output: 3

2 when cin receives a string, it will end when it encounters "space" or "Press ENTER.

# Include <iostream>
Using namespace std;
Main ()
{
Char ch [10];
Cin> ch;
Cout <ch <endl;
}

Input: asdfgh

Output: asdfgh

Input: asdfgh // ends with a space
Output: asdfgh

End with Space

3 get () is used to receive a line of strings and can receive spaces. Get () retains the linefeed in the input sequence.

There can be two parameters. The first parameter is used to store the name of the array of the input row, and the second parameter is the number of characters to read.

For example, cin. get (A, B); // A indicates the array name, and B indicates the number of characters to receive.

4. The usage of getline () and get () is basically the same. The main difference is that the line break is discarded when getline () reads the string.