用C/C++代码检测ip能否ping通(配合awk和system可以做到批量检测)

#include 
#include 
#include 
#include 
#include 
using namespace std;
string getCmdResult(const string &strCmd) // 这个是获取命令执行的结果， 类似于system, 之前我已经说过了
{ 
  char buf[10240] = {0}; 
  FILE *pf = NULL; 
  if( (pf = popen(strCmd.c_str(), "r")) == NULL ) 
  { 
    return ""; 
  } 
  string strResult; 
  while(fgets(buf, sizeof buf, pf)) 
  { 
    strResult += buf; 
  } 
  pclose(pf); 
  unsigned int iSize = strResult.size(); 
  if(iSize > 0 && strResult[iSize - 1] == '\n') // linux 
  { 
    strResult = strResult.substr(0, iSize - 1); 
  } 
  return strResult; 
} 
int main(int argc, char *argv[])
{
 if(argc != 2)
 {
 cout <<"no" <

ubuntu@VM-0-13-ubuntu:~$ ./a.out 
no
ubuntu@VM-0-13-ubuntu:~$ ./a.out 1.1.1.1
1.1.1.1
ubuntu@VM-0-13-ubuntu:~$ ./a.out 172.16.0.13
ipok:172.16.0.13
ubuntu@VM-0-13-ubuntu:~$ ./a.out www.baidu.com
ipok:www.baidu.com
ubuntu@VM-0-13-ubuntu:~$ 

#include 
#include 
#include 
#include 
#include 
#include 
#include 
using namespace std;
string getCmdResult(const string &strCmd) 
{ 
  char buf[10240] = {0}; 
  FILE *pf = NULL; 
  if( (pf = popen(strCmd.c_str(), "r")) == NULL ) 
  { 
    return ""; 
  } 
  string strResult; 
  while(fgets(buf, sizeof buf, pf)) 
  { 
    strResult += buf; 
  } 
  pclose(pf); 
  unsigned int iSize = strResult.size(); 
  if(iSize > 0 && strResult[iSize - 1] == '\n') // linux 
  { 
    strResult = strResult.substr(0, iSize - 1); 
  } 
  return strResult; 
} 
string ipCheck(const string &ip)
{
 string strCmd = "ping " + ip + " -w 1";
 string strRe = getCmdResult(strCmd);
 if((strRe.find("received") != string::npos && strRe.find(", 0 received") == string::npos))
 {
 return "ipok:" + string(ip);
 }
 else
 {
 return ip;
 }
}
int main(int argc, char *argv[])  // ./a.out a.txt b.txt
{
 if(argc != 3)
 {
 cout <<"error" <> " + string(argv[2]) ;
  cout <