The difference between cin and scanf in c++

In C, cin and scanf are both functions used to read input. Their main differences are: input method (cin uses operator overloading, scanf uses formatted strings and pointers), data type (cin only supports specific types, scanf supports multiple types), error handling (cin triggers an exception, scanf returns an error number of items) and performance (cin is easier to use, scanf handles complex input more efficiently).

cin and scanf in C: Difference

Get straight to the point:

cin and scanf are both input streams, used to read data from the standard input device (usually the keyboard). The main difference is:

1. Input method:

• cin: Implemented using operator overloading, allowing data to be read directly into variables middle.
• scanf: Use formatted strings and pointer variables to read data one by one and store it in the specified location.

2. Data type:

• cin: Only specific data types (such as int, float, string, etc.), requires explicit type conversion.
• scanf: Can read multiple data types, specified by the conversion specifier in the format string.

3. Error handling:

• cin: When an input error is encountered, an exception will be triggered and you need to use try-catch block is processed.
• scanf: Returns the number of successfully read items. If the input is incorrect, a negative value is returned.

4. Performance:

• cin: is generally more efficient than scanf because it Use operator overloading and underlying C streams.
• scanf: May be faster when dealing with complex input because the formatted string provides more control.

Summary:

cin is easier to use and more efficient. However, if you need to handle complex or multiple types of data, scanf provides greater flexibility.

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