Older programs (VS 2013 and earlier) expect specific CRT DLLs like msvcr120.dll . If missing, install the Microsoft Visual C++ Redistributable .
Compiler-specific support (exception handling, startup code, intrinsics). App-local or Redistributable C++ Standard Library Containers, algorithms, and advanced C++ features (STL). App-local or Redistributable Key Library Files libucrt.lib : Linker files for the Universal CRT. libcmt.lib : Static library for multithreaded programs. msvcrt.lib : Import library for the dynamic (DLL) version of the CRT. Deployment Strategies microsoft c runtime
| Component | Description | |-----------|-------------| | | mainCRTStartup , WinMainCRTStartup – sets up the environment, calls constructors, then invokes main / WinMain | | Standard C functions | <stdio.h> , <stdlib.h> , <string.h> , <math.h> , <time.h> , etc. | | C++ standard library | <iostream> , <vector> , <string> , <algorithm> , <locale> (largely implemented in headers + static helper code) | | Heap management | malloc , free , new , delete , _heap_* functions | | Locale & multibyte/Unicode | setlocale , wchar_t functions, code pages | | Exception handling | Support for C++ try/catch , structured exception handling (SEH) | | Floating-point support | Initialization of FPU, math error handling | | Low-level I/O | _open , _read , _write (OS call wrappers) | | Security enhancements | _s functions with bounds checking | Older programs (VS 2013 and earlier) expect specific