![]() Persistent languages extend general purpose languages by providing the full range of persistence for data of any type. Persistence is measured by the length of time an object is retained and is usable in a system. ![]() Sisvar gained acceptance by the scientific community because it provides reliable, accurate, precise, simple and robust results, and allows users a greater degree of interactivity. The third goal was to present statistical analysis software for the Brazilian scientific community that would allow research results to be analyzed efficiently and reliably. The second objective was to initiate the development of a genuinely Brazilian free software program that met the demands and peculiarities of research conducted in the country. The first objective was to obtain software that could be used directly on the statistical experimental course of the Department of Exact Science at the Federal University of Lavras. Sisvar was developed to achieve some specific goals. The first version was done in the programming language Pascal and compiled with Borland Turbo Pascal 3. Sisvar is a statistical analysis system, first released in 1996 although its development began in 1994. The examples presented in this monograph will help researchers in theoretical chemistry and organic chemistry to develop their own software. Some examples presented in this these languages are Program to calculate reduced mass of homo diatomic or hetero diatomic Program to calculate the molecular weight of a tetra atomic system ABCD Program to calculate NMR frequencies of spin 1/2 nuclei only Program to calculate NMR and ESR frequencies The examples presented in Java 2 are Program to calculate unit cell dimension of a crystal Program to generate the chair form and boat form of cyclohexane. In this paper I will illustrate features of C, C++ choosing examples from chemistry. Recently the languages C and C++ and Java have been used to solve problems in chemistry. Later the Pascal language was used for solving problems in chemistry and physics. Initially the languages used for computations in chemistry were FORTRAN and BASIC. Computer programming has been used effectively by theoretical chemists and organic chemists to solve various types of problem in chemistry. ![]() ![]()
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