C程序实现fft算法，编程C程序，可以计算出各次谐波值，可运行。-C program to achieve fft algorithms, programming C program, you can calculate the value of the various harmonics, you can run.

用C语言编写的做快速傅立叶变换的程序，自己输入一个正弦函数的频率，选择采样点数和频率，做快速傅立叶变换-Written in C do fast Fourier transform program