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C/C++ code:

#include "stdio.h"
#include "stdlib.h"
#include "windows.h"


DWORD WINAPI ThreadProc1(LPVOID lpParameter);

HANDLE hmutex;

int n ;

FILE *fp;
char ip[20];
int main()
{
HANDLE hthread[10];

fp = fopen("ping.txt","r");
for (n=0;n<10;n++)
{
hthread[n] = CreateThread(NULL,0,ThreadProc1,NULL,0,NULL);

CloseHandle(hthread[n]);
}

hmutex = CreateMutex(NULL,FALSE,NULL);
Sleep(10000);
fclose(fp);
system("pause");
}


DWORD WINAPI ThreadProc1(LPVOID lpParameter)
{

while(!feof(fp))
{

WaitForSingleObject(hmutex,INFINITE);
fscanf(fp,"%s\n",ip);
Sleep(1);
printf("thread%d read1 %s\n",n,ip);

ReleaseMutex(hmutex);
}

retu


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