hello,

sorry that i didn't reply to answers of my previous questions on "random number with probability", since i have finished the coding 2 days after (was feeling tired for a while). so i decided to say thanks this time, the answers did help me a lot =)

well, i got another (simple) question this time. i know very little about c++. if i have the following code in c, what is the equivalent to C++ code?

char c;
c = getc(argv[1]);
...
c = ungetc(c, argv[1]);

well actually, the question is how to do ungetc in C++. thanks a lot =)

wtk

oops, sorry coz i am in a hurry... i am using g++ in unix.

With iostreams in C++ you can use the peek function to look at the next character in the stream without extracting it. The following program will first "peek at" the first character in a line and then read the whole line.

#include <iostream>
#include <fstream>
using namespace std;
int main(int argc, char* argv[])
{
ifstream inp;
char ch, buffer[80];
inp.open("test.dat");
ch=inp.peek();
while (!inp.eof())
{
inp.getline(buffer,80);
cout << ch << " " << buffer << endl;
ch=inp.peek();
}
inp.close();
return 0;
}

If the line in the file is:
6New York
then the following will be printed:
6 6New York

BTW, I did not test this program in unix but it works fine with the latest g++ under Cygwin.

thanks, got it!!

i have added c code in a c++ program, and it compiles and works fine. =) but i know how to use cinpeek() now =)

thanks

wtk