Select the correct answerWhich function is used to read all the characters?OptionsReadchar()Readall()Readcharacters()Read()

Step 1: Break Down the Problem

We need to identify the correct function name used to read all characters from an input source in programming.

Step 2: Relevant Concepts

In various programming languages, functions that read characters from input can vary. It’s important to analyze the options provided:

1. Readchar() - Implies reading a single character.
2. Readall() - Suggests reading all input but is not a standard function in most languages.
3. Readcharacters() - Implies reading all characters but is also not commonly used.
4. Read() - In many programming contexts, this function is used to read data from an input source, often reading until the end.

Step 3: Analysis and Detail

• Readchar() is likely geared towards single character reads.
• Readall() and Readcharacters() sound less common and may not be part of standard libraries.
• Read() typically implies reading input in blocks or fully, making it the most plausible choice for reading all characters.

Step 4: Verify and Summarize

Based on common programming practices, Read() is the function that universally suggests reading all data until the end is reached.

Final Answer

The correct answer is Read().