C语言怎么同时调用多个EXE？

不知道你介不介意用（匿名）管道的方式来实现，通过它的转向功能，可以很容易得到调用程序的输出，并可进行交互。msdn中CreatePipe 函数提供了这方面的例子。还有一个例子，当年写bcb插件ddkbuild编译驱动程序时写的：

void __fastcall BuildAndMessage(AnsiString PathToBuild/*=NULL*/, AnsiString Set/*=NULL*/)

{

AnsiString CommandStr = MakeCommandStr(PathToBuild, Set);

//ShowMessage(CommandStr);

// 读管道

HANDLE hChildStdinWr/*父进程写*/, hChildStdinRd/*子进程读*/;

// 写管道

HANDLE hChildStdoutWr/*子进程写*/, hChildStdoutRd/*父进程读*/;

SECURITY_ATTRIBUTES sa;

_di_IOTAMessageServices MessageServices;

_di_IOTAMessageGroup MessageGroup;

if (BorlandIDEServices->Supports(MessageServices))

{

MessageServices->ClearToolMessages(NULL);

MessageGroup = MessageServices->AddMessageGroup("Ddkbuild");

MessageServices->ShowMessageView(MessageGroup);

}

else

{

ShowMessage("Create ddkbuild messageview failed");

return;

}

sa.bInheritHandle = true;

sa.lpSecurityDescriptor = NULL;

sa.nLength = sizeof(SECURITY_ATTRIBUTES);

// 创建子进程写管道

if (!CreatePipe(&hChildStdoutRd, &hChildStdoutWr, &sa, 0))

{

ShowMessage("Create Stdout pipe failed");

return;

}

SetHandleInformation(hChildStdoutRd, HANDLE_FLAG_INHERIT, 0); // 该句柄子进程没用到，故取消继承性

// 创建子进程读管道

if (!CreatePipe(&hChildStdinRd, &hChildStdinWr, &sa,0))

{

ShowMessage("Create StdinRd pipe failed");

return;

}

SetHandleInformation(hChildStdinWr, HANDLE_FLAG_INHERIT, 0); // 该句柄子进程没用到，故取消继承性

//SetStdHandle(STD_OUTPUT_HANDLE, hChildStdoutWr);

//SetStdHandle(STD_INPUT_HANDLE, hChildStdinRd);

PROCESS_INFORMATION pi;

STARTUPINFO si;

ZeroMemory(&si, sizeof(si));

si.cb = sizeof(STARTUPINFO);

si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;

si.wShowWindow = SW_HIDE;

si.hStdInput = hChildStdinRd; // 重定向子进程输入

si.hStdOutput = hChildStdoutWr; // 重定向子进程输出

si.hStdError = GetStdHandle(STD_ERROR_HANDLE);

// 注意使用了true，这样创建子进程时，父进程的所有可继承的句柄就可以被继承下来了

// 我们也可以使用SetHandleInformation使句柄不可被继承，这样子进程就无法使用了

// 这样的例子可以看《Creating a Child Process with Redirected Input and Output.doc》

if (!CreateProcess(NULL, CommandStr.c_str(), NULL, NULL, true, 0, NULL, NULL, &si, &pi))

{

ShowMessage("Create process failed");

return;

}

// 将数据写入子进程，这里只是演示，本程序不需要写入

const char *strIn = " ";

DWORD dwBytes = 0;

WriteFile(hChildStdinWr, strIn, strlen(strIn), &dwBytes, NULL);

CloseHandle(hChildStdinWr); // 保证对端的ReadFile可返回

// 调用ReadFile前须关闭，否则因写管道写入端有未关闭的Write句柄，ReadFile最后无法返回0

CloseHandle(hChildStdoutWr);

// 从子进程中读出执行结果，不处理mbcs，需要的朋友请加上前导字符的判断

char strData[MAX_PATH * 2];

AnsiString MessageComplete, MessageCut;

char* pos;

char lf = '\n';

void* Unused = 0;

while (ReadFile(hChildStdoutRd, strData, sizeof(strData), &dwBytes, NULL))

{

strData[dwBytes] = 0;

if (pos = strrchr(strData, lf)) // 如果有换行，则显示

{

*(pos-1) = 0;

pos++;

MessageComplete = MessageCut + strData;

MessageCut = pos;

MessageServices->AddToolMessage(

"", MessageComplete, "Ddkbuild", 0, 0, NULL, Unused, MessageGroup);

}

else // 否则暂存

MessageCut = MessageCut + strData;

Application->ProcessMessages();

}

MessageServices->AddToolMessage(

"", MessageCut, "Ddkbuild", 0, 0, NULL, Unused, MessageGroup);

// 关闭句柄

WaitForSingleObject(pi.hProcess, INFINITE);

CloseHandle(hChildStdinRd);

CloseHandle(hChildStdoutRd);

CloseHandle(pi.hProcess);

CloseHandle(pi.hThread);

}