Write a program which asks user to enter a string and that string saves in a .txt file. After the file has been saved your program must count how many time letter 'a' has been reapeated ?
Use fstream, string, and cctype libraries to make your jobe easier.
I wrote following code
Code:
#include <iostream>
#include <fstream>
#include <cctype>
#include <string>
#include <cstdlib>
using namespace std;
int main(void)
{
string input, exit;
int let_a = 0;;
fstream text("test.txt", ios::in | ios::out | ios::app );
cout << "Enter string: ";
cin >> input;
if (!text)
{
cout << "Error at stream opening" << endl;
system("PAUSE");
exit(EXIT_FAILURE);
}
text << input;
while ( !text.eof() )
{
while ( getline(text, exit) )
{
for (int i = 0; i < exit.length(); i++)
{
if ( toupper(exit[i]) == 'A')
{
let_a++;
}
}
}
}
text.close();
cout << "total A: " << let_a << endl;
system("PAUSE");
return 0;
}
I googled and also asked my friends but nobody can find an error
Hi,
I want to be able to list all the names in a file which begin with a capital letter, but I don't want it to list words that begin a new sentence. Is there any way round this?
Thanks for your help. (1 Reply)
Hi
I am running a shell script with bdf command and want to match all files with length 3 inside a specific partitions. How do i do that
say
for example if i want to list all files with length 3 in /home/jimmy partition,
bdf /home/jimmy
the output i need is
xyx
abc
yyy
amp
... (4 Replies)
How to check whether a particular string contains dot or not?
Here I can not use grep as the string is not in a file. I will get this string from user input
Thanks, (2 Replies)
Hi im a noob in Unix
Do you guys know what command display you the files that have the character n in there name im not looking that they have the n in the beginning or in the end im looking that in search the entire string to see if it have the character n i try this
ls n*
but only show... (2 Replies)
Hi,
I have lets say 10 files , I need to process them one by one.
So I need a command to get one file name at a time to process it into a variable
Example
Files
P1111.dat
P3344.dat
S344.dat
...
v_file_name = 'p111.dat' .. I will rename it to something after processing
... (1 Reply)
i would like to search for a letter in a string and get its index position.
example:
name='john'
pos=$(expr index $name o)
the result will be equal to 2 (2nd position)
how do you make this thing not case sensitive?
example:
name='john'
pos=$(expr index $name O)
the... (1 Reply)
I do have a large tab delimited file with the following format
CCCCCGCCCCCCCCCCcCCCCCCCCCCCCCCCC 23 65 3 4
AAAAAAAAAAAAAAAAaAAAAAAAAAAAAAAAA 24 6 89 90
TGTTTTTTTTTTTTGGtTTTTTTTTTTTTTTTT 2 4 8 90
TTTT-TTTTTTTTTTTtTTTTTTTTTTTTTTTT 1 34 89 50
GGGGGGGGGGGGGGGGTGGGGGGGGGGGGGGGG 87 6 78 66... (8 Replies)
I am trying to remove the last letter in a file and then multiply each line (which contained this letter) by 500. This is what I have:
1499998A
1222222A
1325804A
1254556
1235
9998
777
cat /tmp/listzz |gawk '{print $4}'|gawk '{gsub(//, ""); print } This removes the A... (1 Reply)
Good afternoon all,
I want to ask how to change some letter in my file with other letter in spesific line
eg.
data.txt
1
1
1
0
0
0
0
for example i want to change the 4th line with character 1.
How could I do it by SED or AWK.
I have tried to run this code but actually did not... (3 Replies)
Discussion started by: weslyarfan
3 Replies
LEARN ABOUT X11R4
iostreambuf
FBB::IOStreambuf(3bobcat) Error handler FBB::IOStreambuf(3bobcat)NAME
FBB::IOStreambuf - streambuf allowing input and output operations
SYNOPSIS
#include <bobcat/iostreambuf>
Linking option: -lbobcat
DESCRIPTION
This class implements a specialization of the std::streambuf class, allowing input operations from and output operations to different
files. It is intended to be used in combination with FBB::IOStream, thus allowing all stream-based input and output operations using the
same object without the need to use seek-operations. Using an FBB::IOStream object it is, e.g., possible to construct two-way communica-
tions using pipes, much like the facilities offered by sockets.
If the streams that will be associated with the IOStreambuf object support seeking, then the IOStreambuf will do so to. Seeking might also
be availble for a single stream (either the std::istream or the std::ostream).
When the IOStreambuf object goes out of scope, its associated std::ostream object is flushed.
NAMESPACE
FBB
All constructors, members, operators and manipulators, mentioned in this man-page, are defined in the namespace FBB.
INHERITS FROM
std::streambuf
CONSTRUCTORS
o IOStreambuf():
The default constructor results in a IOStreambuf object that cannot be immediately used. Its member open() must be called first.
o IOStreambuf(std::istream &in, std::ostream &out):
This constructor associates the IOStreambuf object with a std::istream and a std::ostream. All output operations will be passed on
to the std::ostream, all input operations to the std::istream. The streams passed to IOStreambuf() should outlive the IOStreambuf
object. De copy constructor is available as well.
MEMBER FUNCTIONS
All members of std::streambuf are available, as FBB::IOStreambuf inherits from these classes.
o void open(std::istream &in, std::ostream &out):
This member (re)associates the IOStreambuf object with a std::istream and a std::ostream. All output operations will be passed on to
the std::ostream, all input operations to the std::istream. The streams passed to IOStreambuf() should outlive the IOStreambuf
object. If this member is called for an IOStreambuf object already associated with an std::ostream object, the already associated
std::ostream object is flushed before setting up the new association.
VIRTUAL PROTECTED MEMBER FUNCTIONS
The following std::streambuf member functions should only be called when the FBB::Streambuf object is associated with std::istream and
std::ostream objects (i.e., they should not be called between the construction of a default FBB:IOStreambuf object and a subsequent call of
IOStreambuf::open()):
The members listed in this section implement the tasks of comparably named virtual function in the class's private interface. This sepa-
rates the redefinable interface from the user-interface. The class IOStreamBuf can, in accordance with Liskov's Substitution Principle, be
used as a std:streambuf; but it also offers facilities for classes deriving from IOStreamBuf. These facilities are listed here.
o pos_type pSeekoff(off_type offset, std::ios::seekdir way, std::ios::openmode mode = std::ios::in | std::ios::out):
With seekable streams, repositions the associated std::istream or std::ostream is repositioned to offset offset, relative to way.
o pos_type pSeekpos(off_type offset, std::ios::openmode mode = std::ios::in | std::ios::out):
With seekable streams, repositions the associated std::istream or std::ostream is repositioned to offset offset, relative to the
beginning of the stream.
o int pSync():
This member flushes the associated std::ostream object.
o std::streamsize pXsputn(char const *buffer, std::streamsize n):
This member inserts n characters from buffer into the associated std::ostream stream.
EXAMPLE
See the example provided with process(3bobcat).
FILES
bobcat/iostreambuf - defines the class interface
SEE ALSO bobcat(7), iostream(3bobcat), process(3bobcat)BUGS
None reported.
DISTRIBUTION FILES
o bobcat_3.01.00-x.dsc: detached signature;
o bobcat_3.01.00-x.tar.gz: source archive;
o bobcat_3.01.00-x_i386.changes: change log;
o libbobcat1_3.01.00-x_*.deb: debian package holding the libraries;
o libbobcat1-dev_3.01.00-x_*.deb: debian package holding the libraries, headers and manual pages;
o http://sourceforge.net/projects/bobcat: public archive location;
BOBCAT
Bobcat is an acronym of `Brokken's Own Base Classes And Templates'.
COPYRIGHT
This is free software, distributed under the terms of the GNU General Public License (GPL).
AUTHOR
Frank B. Brokken (f.b.brokken@rug.nl).
libbobcat1-dev_3.01.00-x.tar.gz 2005-2012 FBB::IOStreambuf(3bobcat)
01-18-2012
