New to C++ Programming: One error in compiler, Please Help.

This is a discussion on New to C++ Programming: One error in compiler, Please Help. within the C++ Programming forums, part of the General Programming Boards category; Error E2451 C:\algorithim.cpp 18: Undefined Symbol 'cout' in function main. Error E2451 C:\algorithim.cpp 19: Undefined Symbol 'endl' in function main. ...

  1. #1
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    Question New to C++ Programming: One error in compiler, Please Help.

    Error E2451 C:\algorithim.cpp 18: Undefined Symbol 'cout' in function main.
    Error E2451 C:\algorithim.cpp 19: Undefined Symbol 'endl' in function main.
    Error E2451 C:\algorithim.cpp 22: Undefined Symbol 'cin' in function main.
    Any Suggestions?


    /*Question 5 Program*/

    int main()

    {
    int A;
    int B;
    int C;
    int D;
    int E;
    int F;
    int G;
    int N;
    int P;
    int S;
    int T;

    cout << "My first algorithim program.";
    cout << endl;
    cout << "Please enter pay rate";
    cout << endl;
    cin >> A;

    cout << endl;
    cout << "Please enter number of hours worked for this week.";
    cout << endl;
    cin >> B;

    cout << endl;
    cout << G = A * B;
    cout << "Income before taxes.";
    cout << A * B;

    cout << endl;
    cout << T = G * .14;
    cout << N = G - T;
    cout << "Income after taxes.";
    cout << G - T;

    cout << endl;
    cout << C = N * .10;
    cout << "Income spent on clothes and other accessories.";
    cout << N * .10;

    cout << endl;
    cout << D = N * .01;
    cout << "Income spent on school supplies";
    cout << N * .01;

    cout << endl;
    cout << F = C + D;
    cout << E = G - F;
    cout << S = E * .25;
    cout << "Income spent on savings bonds.";
    cout << E * .25;

    cout << endl;
    cout << P = S * .5;
    cout << "Money your parents matched to buy savings bonds";
    cout << S * .5;

    return 0;
    }
    Last edited by jljg23; 01-26-2010 at 02:44 PM.

  2. #2
    Registered User whiteflags's Avatar
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    Make sure you know the arithmetic operators of C++. Multiplication is not x, like you learned in school, it is an asterisk. The = sign always assigns to the left side as well.

    It is also really helpful to develop good habits early. Consider not using one-letter names and using words like gross, hours, and wage.

  3. #3
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    thanks for the help, ill try to use that from now on

  4. #4
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    i am still getting the same error message though when i try to compile this updated program

  5. #5
    Registered User hk_mp5kpdw's Avatar
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    Code:
    int main();
    Something wrong there. Also, use [code][/code] tags when posting code samples.
    "Owners of dogs will have noticed that, if you provide them with food and water and shelter and affection, they will think you are god. Whereas owners of cats are compelled to realize that, if you provide them with food and water and shelter and affection, they draw the conclusion that they are gods."
    -Christopher Hitchens

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    thanks for that, now that problem is fixed but more error codes just came up.
    Error E2451 C:\algorithim.cpp 18: Undefined Symbol 'cout' in function main.
    Error E2451 C:\algorithim.cpp 19: Undefined Symbol 'endl' in function main.
    Error E2451 C:\algorithim.cpp 22: Undefined Symbol 'cin' in function main.
    any suggestions?

  7. #7
    Registered User jeffcobb's Avatar
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    Try including iostream.
    C/C++ Environment: GNU CC/Emacs
    Make system: CMake
    Debuggers: Valgrind/GDB

  8. #8
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    yeah that didnt work either, it said it couldnt include iostream

  9. #9
    Allways learning cs_student's Avatar
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    Did you put
    Code:
    #include <iostream>
    at the top of your source file? (it might not be in your path)


    Also, remember that cout and cin are in namespace std.

  10. #10
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    Code:
    #include <iostream>
    
    using namespace std;
    try adding that at top of code.

    also, are you giving us the full program? (just wanted to make sure you were including the right header files and all...)

  11. #11
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    Quote Originally Posted by dhardin View Post
    Code:
    #include <iostream>
    
    using namespace std;
    try adding that at top of code.

    also, are you giving us the full program? (just wanted to make sure you were including the right header files and all...)
    Oh please don't teach "using namespace std". That's a wonderful way to pollute the global namespace.

    Try "using std::cout", "using std::endl", and "using std::cin" if you have to use a using statement.

  12. #12
    Your imaginary friend
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    Why not, does it change anything?

    Im new so its just a question

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