双因素多水平之间的主要效应与互作效应的算法 ①(N1~N2,P1~P3) ②N1...答:includeint main(){ int n1, n2, n3; int *p1, *p2, *p3; void swap(int *p1, int *p2); void(*x)(int *p1, int *p2) = swap; // 这里漏了初始化 p1 = &n1; p2 = &n2; p3 = &n3; printf("please enter 3 numbers:\n"); scanf("%d,%d,%d", &n1, &n2, &n3)...