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Full Discussion: function add_new_book
Homework and Emergencies Homework & Coursework Questions function add_new_book Post 302541333 by GQiang on Saturday 23rd of July 2011 09:58:44 PM
Old 07-23-2011
function add_new_book

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!

1. The problem statement, all variables and given/known data:
What i want to do is to ensure that the Book added is not already existing book in the record. I believe my logic is correct cause as long as the user do not in put space for any of the field the code work fine=.=
E.g He enter Harry for Title instate of Harry Potter
He enter J for author instate of J.K Rowling
2. Relevant commands, code, scripts, algorithms:



3. The attempts at a solution (include all code and scripts):
Code:
function add_new_book
{
    echo "1) add_new_book"
    echo "Title: "
    read title
    echo "Author: "
    read author
    c1=`grep -w $title BookDB.txt |grep -w $author|wc -l` #cannot work when got space 
if [ $c1 -ne 0 ]
then
    echo "Price: "
    read price
    echo "Qty Available: "
    read qtyA
    echo "Qty Sold: "
    read qtyS
    echo "$title:$author:$price:$qtyA:$qtyS" >> BookDB.txt
    echo "New book title "$title" added successfully!"
else
   echo " Name not Found"
fi



4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
University of Wollongong CSCI212 conducted by Mr Tian

Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).

Last edited by GQiang; 07-27-2011 at 09:52 AM.. Reason: SOLVED
 

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std::hash< _Tp >(3cxx)													    std::hash< _Tp >(3cxx)

NAME
std::hash< _Tp > - SYNOPSIS
Inherits std::__hash_base< _Result, _Arg >. Public Types typedef _Arg argument_type typedef _Result result_type Public Member Functions size_t operator() (_Tp __val) const template<> size_t operator() (bool __val) const template<> size_t operator() (char __val) const template<> size_t operator() (signed char __val) const template<> size_t operator() (unsigned char __val) const template<> size_t operator() (wchar_t __val) const template<> size_t operator() (char16_t __val) const template<> size_t operator() (char32_t __val) const template<> size_t operator() (short __val) const template<> size_t operator() (int __val) const template<> size_t operator() (long __val) const template<> size_t operator() (long long __val) const template<> size_t operator() (unsigned short __val) const template<> size_t operator() (unsigned int __val) const template<> size_t operator() (unsigned long __val) const template<> size_t operator() (unsigned long long __val) const template<> size_t operator() (float __val) const template<> size_t operator() (double __val) const template<> size_t operator() (long double __val) const Detailed Description template<typename _Tp>struct std::hash< _Tp > Primary class template hash. Definition at line 58 of file functional_hash.h. Author Generated automatically by Doxygen for libstdc++ from the source code. libstdc++ Tue Nov 27 2012 std::hash< _Tp >(3cxx)
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