In C, _Bool is a keyword that has been officially part of the the language starting with the C99 standard. If you use _Bool as a data type, you don’t have to include anything special… it’s just another keyword.
Nov 29, 2003 C Language - Using stdbool.h | c Tutorial c documentation: Using stdbool.h stdbool.h - sites.uclouvain.be
C Programming/stdbool.h - Wikibooks, open books for an
*/ /* * ISO C Standard: 7.16 Boolean type and values */ #ifndef _STDBOOL_H #define _STDBOOL_H #ifndef __cplusplus #define bool _Bool #define true 1 #define false 0 #else /* __cplusplus */ /* Supporting in C++ is a GCC extension. 31 #endif /* __STDBOOL_H */ Generated on Tue Jul 14 2020 00:58:06 for clang by stdbool.h — boolean type and values SYNOPSIS top #include DESCRIPTION top The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. 31 #endif /* __STDBOOL_H */ Generated on Mon Jun 8 2020 00:59:49 for clang by
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<cstdbool> | Microsoft Docs The header is deprecated in C++. The header is deprecated in C++17 and removed in the draft C++20 standard. Requirements. Header: Namespace: std. Remarks. Including this header ensures that the names declared using external linkage in the C standard library header are declared in the std namespace. Compiler User Guide: Boolean type and <stdbool.h> in C99 Non-Confidential PDF versionARM DUI0375H ARM® Compiler v5.06 for µVision® armcc User GuideVersion 5Home > Compiler Coding Practices > Boolean type and in C99 4.76 Boolean type and in C99 C99 introduces the native type _Bool. The associated standard header introduces the macros bool, true and false for Boolean tests. Use of bool in C - GeeksforGeeks