A Tour of C++, 2nd Edition

10

Input and Output

What you see is all you get.

– Brian W. Kernighan

• Introduction

• Output

• Input

• I/O State

• I/O of User-Defined Types

• Formatting

• File Streams

• String Streams

• C-style I/O

• File System

• Advice

10.1 Introduction

The I/O stream library provides formatted and unformatted buffered I/O of text and numeric values.

An ostream converts typed objects to a stream of characters (bytes):

The three "Typed Values: 'c', 123, and (123, 45)" is connected to "ostream" that is further connected to "stream buffer." The "stream buffer" points toward the "Byte sequences: Somewhere."

An istream converts a stream of characters (bytes) to typed objects: ...