calling an executable from an executable

I am writing a program that involves calling an executable (1) from an executable(2) which i have working [system("whatever.exe")] but i want to be able to give commands from my main program to the executable (2). Does any body know how i can do this

thanks,
dee

Crudely, something like this

Code:

---

char cmd[100];
char param[20];
printf( "Enter param" );
scanf( "%s", param );
sprintf( cmd, "prog.exe %s", param );
system( cmd );

---

You need to add some code to this to make it more secure. The FAQ has topics on safe input, and safe program execution.

I was under the impression that they wanted stdin on the called application to be directed to the stdin of the calling program. So that they could type in the first program and have it run and operate the second.

Quzah.

If that's true, here's a reference for _popen() with example source.

gg

Well until the OP finally shows up (distinct lack of urgency going on here), it's just speculation.