poj 1680 Fork() Makes Trouble

http://162.105.81.212/JudgeOnline/problem?id=1680

题目描述的是Linux操作系统中fork函数的功能(没看明白的可以百度)

只要理解了题目的意思,

就是一个赤裸的递归模拟,

哎, 可是递归程序我永远都写不好...orz..orz...orz

#include<iostream> using namespace std; int id, A, N, K, num; int ok, st; void work(int tag, int A, int loop) { int pid = id; if(ok == 1) return; for(int i=loop; i<N; i++) { if(tag != 0) { num++; if(num == K) { printf("Loop %d: Process ID=%d/n", i, pid); ok = 1; return; } A += 7; id++; work(tag*0, A, i); } if(tag == 0) { num++; if(num == K) { printf("Process ID=%d, A=%d/n", pid, A); ok = 1; return; } } tag++; } } int main() { int t; scanf("%d", &t); while(t--) { scanf("%d%d", &N, &K); num = ok = 0; id = 1000; work(1, 0, 0); } return 0; }