newbie needing help

[raecer]

I want to use cin to get input from the user, and then use it in the
system command. how can this be done? i was thinking something like
this
int h;
cin >> h;
system = ("echo test h test")
that is, i want the value h to be placed inside the system command.
how can i do this? sorry for the n00b question

 

[Victor Bazarov]

I want to use cin to get input from the user, and then use it in the
system command. how can this be done? i was thinking something like
this
int h;
cin >> h;
system = ("echo test h test")
that is, i want the value h to be placed inside the system command.
how can i do this? sorry for the n00b question

The usual way is to compose the string you want to use to call 'system'
with in a separate object, then pass its value to 'system':

int h;
cin >> h;
ostringstream os;
os << "echo test " << h << " test";
system(os.str().c_str());

V

 

[Ron Natalie]

I want to use cin to get input from the user, and then use it in the
system command. how can this be done? i was thinking something like
this
int h;
cin >> h;
system = ("echo test h test")
that is, i want the value h to be placed inside the system command.
how can i do this? sorry for the n00b question

#include <sstream>

ostringstream o ;
o << "echo test " << h << " test";
system(o.str().c_str());

 

[Phlip]

I want to use cin to get input from the user, and then use it in the
system command. how can this be done? i was thinking something like
this
int h;
cin >> h;
system = ("echo test h test")
that is, i want the value h to be placed inside the system command.
how can i do this? sorry for the n00b question

std::stringstream z;
z << "echo test " << h << " test";
system(z.str().c_str());