What is MathLink?
 MathLink is an API available on all the systems on which Mathematica runs. It allows you to write programs in C, C++, or other languages to communicate with the Mathematica kernel. Your compiler must be able to link to the MathLink library format for each specific operating system. (For example, in Windows, the MathLink library is a DLL. Your compiler must be able to link to a DLL, so most DOS C compilers won't work.) MathLink programs come in two varieties. | 1. | It can be a program that can be installed to the kernel and has functions that can be called by the kernel. |
| 2. | It can be a program that acts as a front end for the kernel and can launch the kernel. |
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