May 06, 1998 Avoid Using malloc and free in C The use of malloc and free functions in a C file is not recommended and is even dangerous: 1. Malloc requires the exact number of bytes as an argument whereas new calculates the size of the allocated object automatically. Std::calloc, std::malloc, std::realloc, std::alignedalloc (since C17), std::free Calls to these functions that allocate or deallocate a particular unit of storage occur in a single total order, and each such deallocation call happens-before the next allocation (if any) in this order.
- The malloc function in C allocates a block of uninitialized memory and returns a void pointer to the first byte of the allocated memory block if the allocation succeeds. If the size is zero, the value returned depends on the implementation of the library. It may or may not be a null pointer.
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Allocates a new console for the calling process.
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Syntax
Using Malloc In Dev C++
Parameters
Malloc In C++
This function has no parameters.
Return value
If the function succeeds, the return value is nonzero.
Malloc Function In Dev C++
If the function fails, the return value is zero. To get extended error information, call GetLastError.
Remarks
A process can be associated with only one console, so the AllocConsole function fails if the calling process already has a console. A process can use the FreeConsole function to detach itself from its current console, then it can call AllocConsole to create a new console or AttachConsole to attach to another console.
If the calling process creates a child process, the child inherits the new console.
AllocConsole initializes standard input, standard output, and standard error handles for the new console. The standard input handle is a handle to the console's input buffer, and the standard output and standard error handles are handles to the console's screen buffer. To retrieve these handles, use the GetStdHandle function.
This function is primarily used by a graphical user interface (GUI) application to create a console window. GUI applications are initialized without a console. Console applications are initialized with a console, unless they are created as detached processes (by calling the CreateProcess function with the DETACHED_PROCESS flag).
Requirements
Minimum supported client | Windows 2000 Professional [desktop apps only] |
Minimum supported server Powertop auto tune on boots. In addition to the above, it also requires pciutils-devel, ncurses-devel and libnl-devel components. Development Tools such as C, g, libstdc, autoconf, automake, and libtool. | Windows 2000 Server [desktop apps only] |
Header | ConsoleApi3.h (via Wincon.h, include Windows.h) |
Library How to use 3utools to unlock iphone. | Kernel32.lib |
DLL | Kernel32.dll |