通信实验的编码和译码及纠错程序，通信实验的编码和译码及纠错程序，-Communication experiments, and error-correcting coding and decoding procedures, communications experiments, and error-correcting coding and decoding procedures,

本来想做一个BPSK的调制和解调的混合编程实验，由于混合编程的库里面没有butter、cheby1等滤波器函数，用C编又不会，所以只好请教高手了。呵呵~-Originally wanted to do a BPSK modulation and demodulation of the mixed-programming experiment, as a result of mixed programming library There are no butter, cheby1 function

素数为只能被自己和1整除的数.如果i j等于0,说明i不是素数,跳 出本层循环-Prime number can only be yourself and divisible if i j is equal to 0, indicating that i is not prime, jumped out of the loop

通讯录管理系统，可以实现查询，删除，储存，修改等重要功能-Contact management system that can achieve query, delete, store, modify, and other important functions