用C语言编程产生离散单位斜边序列、门序列、指数衰减序列，实现三者卷积，并在显示器上观察到相关序列或卷积的图形。比较经典的卷积C源码-C language programming produce discrete units hypotenuse sequence, the gate sequence, exponential decay sequence, the realization of the three convolution, and observed in the display