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error C2064: term does not evaluate to a function taking 1 arguments
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Hi, I'm using Microsoft Visual C++ and I keep getting this error referring to this one line in my main file. The line of error is in bold.
Header file
[php]
int f (int n);
double e (double accuracy);
double exp (double expo, double exaccuracy);
[/php]
Computation file
[php]
#include "wong_header.h"
int f(int n)
{
int t = 1;
while (n >= 1)
{
t = t * n--;
}
return t;
}
double e (double accuracy)
{
accuracy = accuracy - 1;
double fac = 1;
double ee = 0;
while (accuracy >= 1)
{
fac = fac * accuracy;
ee = ee + (1/(fac));
accuracy--;
}
return ee;
}
double exp (double expo, int exaccuracy)
{
exaccuracy = exaccuracy - 1;
double value;
double fact = 1;
double exo = 0;
while ((expo >=0)&&(exaccuracy >=1))
{
value = expo * exaccuracy;
fact = fact * exaccuracy;
exo = exo + (value/fact);
exaccuracy--;
}
return exo;
}
[/php]
main file
Can someone help me figure out what I'm doing wrong?
Header file
[php]
int f (int n);
double e (double accuracy);
double exp (double expo, double exaccuracy);
[/php]
Computation file
[php]
#include "wong_header.h"
int f(int n)
{
int t = 1;
while (n >= 1)
{
t = t * n--;
}
return t;
}
double e (double accuracy)
{
accuracy = accuracy - 1;
double fac = 1;
double ee = 0;
while (accuracy >= 1)
{
fac = fac * accuracy;
ee = ee + (1/(fac));
accuracy--;
}
return ee;
}
double exp (double expo, int exaccuracy)
{
exaccuracy = exaccuracy - 1;
double value;
double fact = 1;
double exo = 0;
while ((expo >=0)&&(exaccuracy >=1))
{
value = expo * exaccuracy;
fact = fact * exaccuracy;
exo = exo + (value/fact);
exaccuracy--;
}
return exo;
}
[/php]
main file
#include <iostream>
#include <fstream>
#include <cstdlib>
#include <string>
#include <iomanip>
using namespace std;
#include "wong_header.h"
int main()
{
string command;
int arg1;
double earg2;
double exarg4, exarg5;
int result;
double eresult, exresult;
ifstream fin ("input.txt"); //reads from file input.txt
if (!fin) //checks input file
{
cerr <<"Cannot open the file input.txt\n";
return 0;
}
ofstream fout("out.txt"); //output stream
if (!fout) //check if output file
{ //was opened successfully
cerr <<"Cannot open the file out.txt\n";
return 0;
}
while(!fin.eof()) //it will read line after line until the program ends
{
fin >> command;
int f = atoi (command.c_str());
if (command == "f")
{
fin >> arg1;
result = f(arg1);
cout << "factorial of " << arg1 << "= " << result << "\n";
fout << "factorial of " << arg1 << "= " << result << "\n";
}
else if (command == "!")
{
}
else if (command == "e")
{
fin >> earg2;
eresult = e(earg2);
cout << "e with the accuracy of " << earg2 << " is " << eresult<< "\n";
fout << "e with the accuracy of " << earg2 << " is " << eresult<< "\n";
}
else if (command == "exp")
{
fin >> exarg4, exarg5;
exresult = exp(exarg4, exarg5);
cout <<"The value of e^x with e being " <<exarg4<<" and x being " <<exarg5<< "is\n";
cout << exresult <<"\n";
fout <<"The value of e^x with e being " <<exarg4<<" and x being " <<exarg5<< "is\n";
fout << exresult <<"\n";
}
else
{
}
}
fin.close();
fout.close();
return 0;
}Can someone help me figure out what I'm doing wrong?
•
•
Join Date: Aug 2005
Posts: 15,152
Reputation: 
Solved Threads: 1437
which line is in bold ? they all look bold to me. how about adding some comments that point to the line
I think its better to use code tags when posting code, not php tags.
... <<< this line is the error I think its better to use code tags when posting code, not php tags.
Sorry, here it the main file again:
#include <iostream>
#include <fstream>
#include <cstdlib>
#include <string>
#include <iomanip>
using namespace std;
#include "wong_header.h"
int main()
{
string command;
int arg1;
double earg2;
double exarg4, exarg5;
int result;
double eresult, exresult;
ifstream fin ("input.txt"); //reads from file input.txt
if (!fin) //checks input file
{
cerr <<"Cannot open the file input.txt\n";
return 0;
}
ofstream fout("out.txt"); //output stream
if (!fout) //check if output file
{ //was opened successfully
cerr <<"Cannot open the file out.txt\n";
return 0;
}
while(!fin.eof()) //it will read line after line until the program ends
{
fin >> command;
int f = atoi (command.c_str());
if (command == "f")
{
fin >> arg1;
result = f (arg1);//THIS LINE IS THE ERROR
cout << "factorial of " << arg1 << "= " << result << "\n";
fout << "factorial of " << arg1 << "= " << result << "\n";
}
else if (command == "!")
{
}
else if (command == "e")
{
fin >> earg2;
eresult = e(earg2);
cout << "e with the accuracy of " << earg2 << " is " << eresult<< "\n";
fout << "e with the accuracy of " << earg2 << " is " << eresult<< "\n";
}
else if (command == "exp")
{
fin >> exarg4, exarg5;
exresult = exp(exarg4, exarg5);
cout <<"The value of e^x with e being " <<exarg4<<" and x being " <<exarg5<< "is\n";
cout << exresult <<"\n";
fout <<"The value of e^x with e being " <<exarg4<<" and x being " <<exarg5<< "is\n";
fout << exresult <<"\n";
}
else
{
}
}
fin.close();
fout.close();
return 0;
} •
•
Join Date: Nov 2005
Posts: 251
Reputation:
Solved Threads: 25
Posting Whiz in Training
int f = atoi (command.c_str()); if (command == "f") { fin >> arg1; result = f (arg1);//THIS LINE IS THE ERROR cout << "factorial of " << arg1 << "= " << result << "\n"; fout << "factorial of " << arg1 << "= " << result << "\n"; }
dwk
Seek and ye shall find.
"Only those who will risk going too far can possibly find out how far one can go."
-- TS Eliot.
"I have not failed. I've just found 10,000 ways that won't work."
-- Thomas Alva Edison
"The only real mistake is the one from which we learn nothing."
-- John Powell
Seek and ye shall find.
"Only those who will risk going too far can possibly find out how far one can go."
-- TS Eliot.
"I have not failed. I've just found 10,000 ways that won't work."
-- Thomas Alva Edison
"The only real mistake is the one from which we learn nothing."
-- John Powell
Heh, that was post 100 for him. I feel so honored. It's not reading the input.txt file though. Where do I put the input fine so my program can read it?
•
•
Join Date: Feb 2006
Posts: 482
Reputation:
Solved Threads: 47
Posting Pro in Training
Generally, your input.txt should go in the same place as your executable. If for some reason, this is causing you problems, or you do not know where the executable is, refer to the complete path of the txt file explicitly, for example, in DOS/Windows, you'd use
the double-backslash is necessary, since the file location is a string (and '\\' is the escape character for a single backslash)
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