程序运行后，给出6个菜单项的内容和输入提示，具体如下：1. 数字排序 2. 字符查找3. 矩阵变换 4. 结构体数组5. 三次方程 6. 字符串删减7. Goodbye!-Program runs six menu items and input prompts are given as follows: 1. Sort of figure 2. Characters find the three matrix to transform the structure array. Cubi

本例程解决了一元四次方程求解的问题，方法是先将一元四次方程降解成一元三次方程，再求解。-This example show how to solve the quartic equation.