用请编写递归函数,输出1,2,3,….n的全排列(n小于10),并观察n逐步增大时...答:include <stdio.h>#include void init(int a[], int length);void p(int a[], int length, int i);void swap(int a[], int i, int j);void print(int a[], int length);int main() { int i = 0, length; clock_t start, end; int a[10]; double t[10]; for ...
设计一个能产生三种波形(方波,正弦波,三角波)且频率步进可调的信号发生...答:include<iom16v.h> include<macros.h> void Delayus(unsigned int t);void INT0_isr(void);void Init_PORT(void);void INT0_init(void);unsigned int select_num,num;unsigned int pl,zkb;const unsigned char sin_tab[]= { 128,130,132,135,137,139,141,143,146,148,150,152,154,157...