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simple stack and string prog's

Posted on 2003-11-01
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Last Modified: 2010-04-02
i need to know how to work with built-in stacks and strings, i 2 progs r below with their error messages. so plz if u can tell me y they're not working:


#include <iostream.h>
#include <stack.h>

int main()
{
      stack stk;
      for(int i=0; i<5; i++)
            stk.push(i*20%6);

      while(!stk.empty())
      {
            cout<<stk.top()<<endl;
            stk.pop();
      }

      return 0;
      
}

--------------------Configuration: test - Win32 Debug--------------------
Compiling...
main.cpp
c:\c++\test\main.cpp(2) : fatal error C1083: Cannot open include file: 'stack.h': No such file or directory
Error executing cl.exe.

test.exe - 1 error(s), 0 warning(s)


----------------------------------
#include <iostream.h>
#include <string.h>

int main()
{
      string a;
      cin>>a;
      cout<<a<<endl;

      return 0;
      
}

--------------------Configuration: test - Win32 Debug--------------------
Compiling...
main.cpp
c:\c++\test\main.cpp(6) : error C2065: 'string' : undeclared identifier
c:\c++\test\main.cpp(6) : error C2146: syntax error : missing ';' before identifier 'a'
c:\c++\test\main.cpp(6) : error C2065: 'a' : undeclared identifier
Error executing cl.exe.

test.exe - 3 error(s), 0 warning(s)


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Question by:minjiber
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6 Comments
 
LVL 4

Expert Comment

by:n_fortynine
ID: 9663539
>>c:\c++\test\main.cpp(2) : fatal error C1083: Cannot open include file: 'stack.h': No such file or directory
You mean #include <stack>
using std::stack;
stack<int> stk;

>>#include <string.h>
Try #include <string>
0
 
LVL 2

Author Comment

by:minjiber
ID: 9664146
thanx n_fortynine,

the stack prob worked, but the string didnt. i would appreciate it if u send me an example, simple one like inputing a string and printing it.
0
 
LVL 8

Expert Comment

by:Exceter
ID: 9664289
>> the stack prob worked, but the string didnt.

Try including <string>. For example,

#include <iostream>
#include <iomanip>
#include <string>

using namespace std;

int main()
{
    string st;

    cin >> st;
    cout << st << endl;

    return 0;
}

Cheers!
Exceter
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LVL 4

Accepted Solution

by:
n_fortynine earned 20 total points
ID: 9664582
>> the stack prob worked, but the string didnt.
What you are missing is, like Exceter mentioned, using namespace std;
If you don't want to write that, try writing
using std::string;
or put std::string instead of string whenever you declare a string variable.
0
 
LVL 8

Expert Comment

by:Exceter
ID: 9664870
Also, you shouldn'tbe using the .h extensions because these files are non-standard. Just use the same names without he .h part, as I did in my example.
0
 
LVL 2

Author Comment

by:minjiber
ID: 9691820
thanx guys, boths the probs worked.
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