What does \0 mean in c++

In C, "\0" is the escape sequence representation of the null character, which represents a binary 0 value. Its main purpose is: the terminator of a string, marking the end of the string; ensuring the validity of the string. sex; facilitates the processing and comparison of strings; allows binary data to be stored without conflicting with characters.

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The meaning of "\0" in C

"\0" is the null character in C Escape sequence representation. It represents a binary 0 value in bytes and is commonly used as a terminator for strings.

Usage:

"\0" is mainly used in C strings as a sign of the end of the string. All characters after the first "\0" in the string are considered invalid data.

Example:

char str[] = "Hello"; cout << str << endl; // 输出 "Hello"

Principle:

The C compiler stores strings ending with "\0" Character array. When a program accesses a string, the compiler automatically adds "\0" to the end to identify the end of the string.

Importance:

• Ensure the validity of the string.
• Facilitates string processing and comparison.
• Allows binary data to be stored in a string without conflicting with other characters.

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