#include 
#include 
#include 
#include 
#include     void checkArgvs(int argc,char* argv[]);
void exiter(char* str);
void exiter();    int running = 1;    int main(int argc,char* argv[]) {
  cout << "\n";
  checkArgvs(argc,argv);
  int n1 = *argv[1] - 48,
                  n2 = *argv[2] - 48,
                  n3 = *argv[3] - 48,
                  n4 = *argv[4] - 48,
                  n5 = *argv[5] - 48;
  int t1[n1];
  int t2[n3];
  int t3[n5];
  for(int i = 1;i <= n1;i  ) {
    if((t1[i -1] = fork()) == -1) {
      exiter("fork()失敗。\n");
    } else if (t1[i -1] == 0) {
             t1[i -1] = getpid();
             printf("t1[%i] = %i\n",i-1,t1[i-1]);
         if(i == n2) {
          for(int j = 1;j <= n3;j  ) {
                if((t2[j -1] = fork()) == -1) {
                     exiter("fork()失敗。\n");
                    } else if (t2[j -1] == 0) {
                             t2[j -1] = getpid();
                             printf("t2[%i] = %i\n",j-1,t2[j-1]);
                                   if(j == n4) {
                               for(int k = 1;k <= n5;k  ) {
                                   if((t3[k -1] = fork()) == -1) {
                                exiter("fork()失敗。\n");
                                                    } 
                                                   else if (t3[k -1] == 0) {
                                           t3[k -1] = getpid();
                                           printf("t3[%i] = %i\n",k-1,t3[k-1]);
                                           exit(1);
                                                    }
                                                  }
                              }
                              exit(1);
                            }
                          }
      }
      exit(1);
    }
  }
  while(running);
  exiter("forktest執行結束。\n");
  return 0;
}    void checkArgvs(int argc,char* argv[]) {
  cout << "參數檢查開始...\n";
  if(argc != 6) {
    exiter("\tERROR：參數必須為五個大於零的個位數字。\n未通過參數檢查\n");
  }
  for(int i = 1;i <= 5;i  ) {
    if(*argv < 49 || *argv > 57)//49是用asc來看的..48表0而57則是9 {
      exiter("\tERROR：參數必須為大於零的個位數字。\n未通過參數檢查\n");
    }
  }
  if(*argv[2] > *argv[1]) {
    exiter("\tERROR：第二個參數不得大於第一個參數。\n未通過參數檢查\n");
  }
  if(*argv[4] > *argv[3]) {
    exiter("\tERROR：第四個參數不得大於第三個參數。\n未通過參數檢查\n");
  }
  cout << "通過參數檢查。\n";
}    void exiter(char* str) {
  cout << str << "\n";
  exit(1);
}    void exiter() {
  exiter("");
}