Usage of cin.getline function in c++

The cin.getline() function reads a line of characters from standard input until the newline character or the specified maximum number of characters. Specific usage: char str[100];cin.getline(str, 100);

##cin.getline() function usage

Introduction:

The cin.getline() function is a function in C used to read a line of characters from standard input. This function reads characters from the stream until a newline character ('\n') is encountered or the specified maximum number of characters is reached.

Syntax:

<code class="cpp">istream& cin.getline(char *str, int num);</code>

Parameters:

• str: ​​ points to the character array Pointer to store the row read from the stream.
• num: Specifies the maximum number of characters in the character array, including the '\0' terminator.

Return value:

Returns the istream object representing the stream status. If the row is read successfully, the object represents normal status; otherwise, it represents an error status.

Usage:

Usually use the cin.getline() function to read user input from the keyboard. The specific usage is as follows:

<code class="cpp">char str[100];
cin.getline(str, 100); // 从标准输入读取一行并存储在 str 中</code>

Note:

The cin.getline() function will automatically skip any spaces or newlines in the stream.
• If the input line length is greater than the maximum number of characters, the function truncates the line and discards the remaining characters.
• If the maximum number of characters is reached without encountering a newline character, the function continues reading until a newline character is encountered or the end of file is encountered.

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