The meaning of scanf in c language

The scanf function is an input function in C language used to read formatted data from standard input. Usage is as follows: Specify the format of the input data (using a format string). Provide the variable address (using the & operator). Reads data from standard input according to a formatted string and stores it in the specified variable.

The meaning of scanf function in C language

The scanf function is a standard input function in C language. Use Used to read formatted data from standard input (usually the keyboard) and store it in a specified memory location.

Usage:

scanf("formatted string", & variable list);

Among them:

• Format string: Specify the format of the input data, for example, "%d" represents an integer and "%f" represents a floating point number.
• Variable list: Variable addresses that store input data in sequence.

Example:

<code class="c">int age;
float weight;
scanf("%d %f", &age, &weight);</code>

In this example, the scanf function reads two data from the standard input. The first data is an integer and is stored in age variable, the second data is a floating point number and is stored in the weight variable.

Format characters:

Format characters	Data type
%d	Integer
%f	Floating point number
%c	Character
%s	String

Note Matters:

• #scanf function requires that the format of the input data is consistent with the format string, otherwise an error will occur.
• When using the scanf function, you must use the & operator to obtain the variable address.
• The scanf function skips leading whitespace characters.

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