trying to change filter comment in c++ to c language under visual c++

copy and paste the below source code for analysis
i tried to change cin.get(c) and !cin.eof to c = getchar() and ((c=getchar()) != EOF) but it didn't work, tell me why??? it can be compiled but the characters i typed in was skipped oddly
if abcd is entered
bd will be displayed

i need to compile this source under the linux platform, so i need help to write a version of this program under c language instead of c++.........please help!!!

#include <iostream.h> // include file c++
#include <stdio.h> // c lang
#include <stdlib.h> // c lang

int main()
{
char c; // declaration of variable used to scan the stream of characters

while (!(cin.eof())) // reads input until end of file is reached
{
cin.get(c);

if (c != '/' && c != '"') // check for possible start of comment or quotation
printf("%c", c);

else if (c == '"') { // Finds start of quotation
printf("%c", c);
cin.get(c);

while (c != '"') {// Ignores characters inside quotation
printf("%c", c);
cin.get(c);

if (c == '\\') {// Check for '\"' characters inside string and ignores them
printf("%c", c);
cin.get(c);

if (c == '"')
printf("%c", c);

else
printf("%c", c);

cin.get(c);
}

if (cin.eof()) {// Displays error if program gets to the end of file before finding the closing quote
cerr <<"\n ------- ERROR!!! End of file reached before end of string!!! -------\n\n\n";
return EXIT_FAILURE;
}
}

if (c == '"') // Finds end of quotation
printf("%c", c);
}

else if(c == '/') {// Checks for // kind of comment
cin.get(c);

if (c == '/') {
while (c != '\n') {// Delete all characters until end of line is reached
cin.get(c);

if (c == '\n')
printf("%c", c);

else
printf("");
}
}

else if(c == '*') { // Checks for /* kind of comment

cin.get(c);

while (c != '*') { // Deletes all characters until '*' is found
printf("");
cin.get(c);

if (cin.eof()) { // Displays error if program gets to the end of file before finding the end of the comment
cerr <<"\n ------- ERROR!!! End of file reached before end of comment!!! ------- \n\n\n";
return EXIT_FAILURE;
}

}

if (c == '*') { // Finds possible end of comment

cin.get(c);

while (c != '/') {
printf("");
cin.get(c);
}

if (c == '/') // Confirms end of comment
printf("");

}

}

}

else
printf("%c", c);

}
return EXIT_SUCCESS;
}

let's say you have two statements in order:

Code:

---

cin.get(c);  //get a character and puts it into c
if (!cin.eof) ...  //if stream cin has reached eof...

---

and you changed it to:

Code:

---

c = getchar();  //get a character and put it in c
if ((c = getchar()) != EOF) ...//get another character and put it into c, then check if its EOF

---

see the problem? you're getting two characters, but only counting the second one. i would remove the c = getchar(); statement altogether.