crt secure no warnings

To compile a C++ program without any warnings related to the CRT (C Run-Time) library, you need to follow these steps:

  1. Include the necessary headers: At the beginning of your C++ program, include the appropriate headers for the functions and libraries you are using. For example, if you are using the iostream library, include the iostream header by adding #include <iostream>.

  2. Disable specific warnings: To disable specific warnings related to the CRT library, you can use compiler directives or pragmas. For example, to disable warning C4996 (deprecated functions), you can add #pragma warning(disable : 4996) before the code that triggers the warning.

  3. Link against the static CRT library: By default, the C++ compiler will link against the dynamic CRT library (msvcrt.dll), which can generate warnings related to the CRT. To avoid these warnings, you can link against the static CRT library (libcmt.lib) instead. To do this, add the following line to your code:

cpp #pragma comment(lib, "libcmt.lib")

This pragma tells the compiler to link against the static CRT library during the linking phase.

  1. Compile and link your program: Finally, compile and link your C++ program using your preferred compiler. Make sure to specify the necessary compiler and linker options to ensure that the static CRT library is used. For example, if you are using the Microsoft Visual C++ compiler (cl.exe), you can use the /MT option to link against the static CRT library. The command to compile and link your program may look like this:

cl.exe /MT your_program.cpp

This command will compile your_program.cpp and link it against the static CRT library.

By following these steps, you should be able to compile your C++ program without any warnings related to the CRT library.