TerminateProcess

i have a console application from which i have created two cmd.exe process's.  i want to capture the SIGINT signal in the console app and in the callback fuction of SIGINT i want to close the two processes created.  but the processes are not terminated.

the call back of the SIGINT looks like this:

void cleanup(int data)
{

DWORD lpExitCode;
        GetExitCodeProcess(processInfoMain.hProcess,&lpExitCode);
        if(!TerminateProcess(processInfoMain.hProcess,lpExitCode))
        {
            printf("\n unable to terminateprocess");
        }
    GetExitCodeProcess(processInfoRil.hProcess,&lpExitCode);
    if(!TerminateProcess(processInfoRil.hProcess,lpExitCode))
    {
        printf("\n unable to terminateprocess");
    }

 } 

could any one please help me how to terminate the two processes created.