char char_inputed;
fin >> char_inputed;
while(char_inputed != '\n'){
cout << char_inputed;
fin >> char_inputed;
}
c++ question about getting a char from a file.
Author
ok, here is my code that i'm having problems with:
That would typically happen if there is not newline in the file. You should also check if you are passed the end of the file; it might be that >> will keep returning the character last read.
Greetz,
Illco
Greetz,
Illco
Author
well, my file is the following:
there is a few returns in there i think :)
and i know about the end of file, i put in a cin.eof() to stop it from never stopping, but what i really need is to know when a line ends. i'm trying to build a line counter program.
qwertyasdfghzxcvbnthere is a few returns in there i think :)
and i know about the end of file, i put in a cin.eof() to stop it from never stopping, but what i really need is to know when a line ends. i'm trying to build a line counter program.
You should know that using stream insertion/extraction operators preforms formatted I/O, anyways:
you could do something like:
char c = '\0';while(fin >> c && c != '\n' && std::cout << c) ;Quote:Original post by CJWR
i'm trying to build a line counter program.
you could do something like:
typedef std::istreambuf_iterator<char> istbuf_itr;//...std::cout << std::count(istbuf_itr(fin), istbuf_itr(), '\n');
Author
Quote:Original post by snk_kid
You should know that using stream insertion/extraction operators preforms formatted I/O, anyways:char c = '\0';while(fin >> c && c != '\n' && std::cout << c) ;Quote:Original post by CJWR
i'm trying to build a line counter program.
you could do something like:typedef std::istreambuf_iterator<char> istbuf_itr;//...std::cout << std::count(istbuf_itr(fin), istbuf_itr(), '\n');
as nice as that is, your code didn't work either.
#include <iostream>#include <fstream>using namespace std;int main(int argc,char *argv[]){ int x = 0; string s = ""; ifstream read; for(int i = 1; i < argc; i++){ read.open(argv); while(getline(read,s)){ cout << s << endl; x++; } read.close(); } cout << x << " lines" << endl;}
Fixed up a tiny bit:
Oh, and with proper context, snk_kid's thing certainly does work (compiled and tested locally):
#include <iostream>#include <fstream>#include <string>using namespace std;int main(int argc,char *argv[]){ int total = 0; string s = ""; for(int i = 1; i < argc; i++) { int fileLines = 0; ifstream in(argv); while(getline(in,s)){ //cout << s << endl; fileLines++; } cout << fileLines << " lines in " << argv << endl; total += fileLines; } cout << total << " lines total" << endl;}Oh, and with proper context, snk_kid's thing certainly does work (compiled and tested locally):
#include <iostream>#include <fstream>using namespace std;int main(int argc,char *argv[]){ typedef std::istreambuf_iterator<char> istbuf_itr; int total = 0; for(int i = 1; i < argc; i++) { ifstream in(argv); int fileLines = std::count(istbuf_itr(in), istbuf_itr(), '\n'); cout << fileLines << " lines in " << argv << endl; total += fileLines; } cout << total << " lines total" << endl;}This topic is closed to new replies.
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