Receiving C2447 error - unable to correct error

Sun, 02 Dec 2007 01:38:16 Z

I am a new to C++ and I am completing an exercise in C++. I have read my text and online materials to see if I can correct the error. I have tried everything that I know to correct the problem, but no luck.

I don't understand what is meant by missing function header? This is the error details: error C2447: '{' : missing function header (old-style formal list?) which occurs a line 60 (the red bracket below).

Any guidance is helpful.

Chris

#include "stdafx.h"

#include <iostream>

using namespace std;

int binomial ( int n, int k); // function prototype

int _tmain(int argc, _TCHAR* argv[])

{

int n, k ; // parameters for the binomial number

int result ;

cout << endl ;

// read in n & k

cout << "Enter n (positive integer) : " ;

cin >> n ;

cout << "Enter k (positive integer) : " ;

cin >> k ;

result = binomial(n, k) ;

cout << "Binomial number " << n << "C" << k

<< " = " << result << endl ;

return (0) ;

}

// ********************************************************

int binomial ( int n, int k ) ;

/* Computes the binomial coefficient nCk */

/* */

/* Inputs: */

/* n, k (integers) */

/* */

/* Output: */

/* binomial coefficient nCk (integer) */

{

int numerator, denominator ;

int i ; // needed to compute numerator & denominator <![endif]>

if (n < k)

{

return(0) ;

}

else

{

denominator = 1 ; // initial value <![endif]>

for (i = 1 ; i <= k ; i = i+1)

denominator = denominator * 1 ; <![endif]>

for (i = n-k+1 ; i <= n ; i = i+1)

numerator = numerator * i ; <![endif]>

return (numerator/denominator) ;

} // else

}

Receiving C2447 error - unable to correct error

Sun, 02 Dec 2007 01:48:21 Z

Simply remove the ';' sign at the end of your definition for 'binomial'...

// ********************************************************

int binomial ( int n, int k ) ; <-- Remove the ';' right here

/* Computes the binomial coefficient nCk */

/* */

/* Inputs: */

/* n, k (integers) */

/* */

/* Output: */

/* binomial coefficient nCk (integer) */

{

int numerator, denominator ;

int i ; // needed to compute numerator & denominator <![endif]>

if (n < k)

{

return(0) ;

}

else

{

denominator = 1 ; // initial value <![endif]>

for (i = 1 ; i <= k ; i = i+1)

denominator = denominator * 1 ; <![endif]>

for (i = n-k+1 ; i <= n ; i = i+1)

numerator = numerator * i ; <![endif]>

return (numerator/denominator) ;

} // else

}

Receiving C2447 error - unable to correct error

Sun, 02 Dec 2007 01:58:16 Z

Thanks for the reply, but now I have additional errors regarding missing ';" before <

Simply remove the ';' sign at the end of your definition for 'binomial'...

// ********************************************************

int binomial ( int n, int k ) ; <-- Remove the ';' right here

/* Computes the binomial coefficient nCk */

/* */

/* Inputs: */

/* n, k (integers) */

/* */

/* Output: */

/* binomial coefficient nCk (integer) */

{

int numerator, denominator ;

int i ; // needed to compute numerator & denominator <![endif]>

if (n < k)

{

return(0) ;

}

else

{

denominator = 1 ; // initial value <![endif]>

for (i = 1 ; i <= k ; i = i+1)

denominator = denominator * 1 ; <![endif]>

for (i = n-k+1 ; i <= n ; i = i+1)

numerator = numerator * i ; <![endif]>

return (numerator/denominator) ;

} // else

}

Receiving C2447 error - unable to correct error

Sun, 02 Dec 2007 02:06:24 Z

C++ Student wrote:

Thanks for the reply, but now I have additional errors.

Well...and the errors are? The removal only fixes the error you posted about before. Certainly any other error in your code following this ';' sign is still there and raises not error since the first one is fixed...

Receiving C2447 error - unable to correct error

Sun, 02 Dec 2007 17:07:52 Z

I reviewed the error codes with the online help. Tried to correct the errors, but with no success.

#include "stdafx.h"

#include <iostream>

using namespace std;

int binomial ( int n, int k) ; // function prototype

int _tmain(int argc, _TCHAR* argv[])

{

int n, k ; // parameters for the binomial number

int result ;

cout << endl ;

// read in n & k

cout << "Enter n (positive integer) : " ;

cin >> n ;

cout << "Enter k (positive integer) : " ;

cin >> k ;

result = binomial(n, k) ;

cout << "Binomial number " << n << "C" << k

<< " = " << result << endl ;

return (0) ;

}

// ********************************************************//

int binomial ( int n, int k )

/* Computes the binomial coefficient nCk */

/* */

/* Inputs: */

/* n, k (integers) */

/* */

/* Output: */

/* binomial coefficient nCk (integer) */

{

int numerator, denominator ;

int i ; // needed to compute numerator & denominator <![endif]>

if (n < k)

{

return(0) ;

}

else

{

denominator = 1 ; // initial value <![endif]>

for ( i = 1 ; i <= k ; i = i + 1)

denominator = denominator * i;<![endif]>

for (i = n-k+1 ; i <= n ; i = i + 1) //line 76. Four errors: warning C4552: '<=' : operator has no effect; expected operator with side-effect;

error C2143: syntax error : missing ';' before ')'; error C2143: syntax error : missing ';' before ')'; error C2143: syntax error : missing ';' before '<'

numerator = numerator * i;<![endif]>

return (numerator/denominator);

} // else

}

Thanks,

Chris

Receiving C2447 error - unable to correct error

Sun, 02 Dec 2007 17:47:19 Z

Well...you have some '<![endif]>' clauses in your code that the compiler certainly cannot understand. Please find below a cleaned-up version of your function:

Code Block

int binomial( int n, int k )

{

int numerator, denominator;

int i;

int(n < k)

{

return (0);

}

else

{

denominator = 1;

for( i = 1; i <= k; i = i + 1)

denominator = denominator * i;

for( i = n-k+1; i <= n; i = i + 1)

numerator = numerator * i;

return (numerator/denominator);

}

Receiving C2447 error - unable to correct error

Sun, 02 Dec 2007 21:44:08 Z

Yes, the <![endif]> clauses were the problem. The code ran when the <![endif]> clauses were removed.

A good lesson learned.

Thanks very much!

Chris

Receiving C2447 error - unable to correct error

Mon, 03 Dec 2007 09:55:07 Z

Hello Andreas ,
This code contain few error .have a look on the bold Line

Andreas Masur wrote:

Well...you have some '<![endif]>' clauses in your code that the compiler certainly cannot understand. Please find below a cleaned-up version of your function:

Code Block

int binomial( int n, int k )

{

int numerator, denominator;

int i;

int(n < k) // i think it is if(n<k) instead of int

{

return (0);

}

else

{

denominator = 1;

for( i = 1; i <= k; i = i + 1)

denominator = denominator * i;

for( i = n-k+1; i <= n; i = i + 1)

numerator = numerator * i; // Unexpected result .Because numerator is not initialized

return (numerator/denominator);

}

Receiving C2447 error - unable to correct error

Sat, 08 Dec 2007 04:22:49 Z

I would like to add an error message similar to the one below that would stop the program and recall the function if the problem would result in an overflow error.

if (n < k)

{

cout <<"ERROR!! n must be larger than k."<<endl ;

return (0) ;

}

Your input would be greatly appreciated.

Receiving C2447 error - unable to correct error

Sat, 08 Dec 2007 12:18:41 Z

Voltronx wrote:

I would like to add an error message similar to the one below that would stop the program and recall the function if the problem would result in an overflow error.

if (n < k)

{

cout <<"ERROR!! n must be larger than k."<<endl ;

return (0) ;

}

Your input would be greatly appreciated.

Hello Voltronx this will defenately show you the message but but will not recall the function .if you want that your program will work according to your logic .then you should use a do..while loop inside your program like shown in the following example

Code Block
do{
//write your code here
}while(n<k);


Thanx