i am new to c++ and m having a problem in making a scientific calculator plsss help me i dun know how to make the power function work
here is my program
m working in visual studio 2005 ,c++
getiing this error
error C2064: term does not evaluate to a function taking 2 arguments

#include "stdafx.h"
#include<iostream>
#include<cmath>
#include<conio.h>
using namespace std;
void sum();
void product();
void sub();
void div();
void remainder();
void square();
void cube();
void cos();
void sin();
void tan();
void cosh();
void sinh();
void tanh();
void acos();
void asin();
void atan();
void exp();
void log();
void log10();
void atan2();
void pow();
int main()
{
cout<<"i am going to use a functional aproach to make a calculator"<<endl;
long func;
cout<<"enter function you want to perform(+,*,D,-,R,S,C,c,s,t,h,H,T,A,b,d,E,L,l,N,P): \n";
cout<<"KEY :\n";
cout<<"`+' is for addition\n";
cout<<"`*' is for multiplication\n";
cout<<"`D' is for division\n";
cout<<"`-' is for subtraction \n";
cout<<"`R' is for remainder\n";
cout<<"`S' is for square\n";
cout<<"`C' is for cube\n";
cout<<"`c' is for cosine\n";
cout<<"`s' is for sine\n";
cout<<"`t' is for tangent\n";
cout<<"`T' is for hyperbolic tangent\n";
cout<<"`h' is for hyperbolic cosine\n";
cout<<"`H' is for hyperbolic sine\n";
cout<<"`A' is for arc cosine\n";
cout<<"`b' is for arc sine\n";
cout<<"`d' is for arc tangential\n";
cout<<"`E' is for exponent\n";
cout<<"`L' is for logarithm\n";
cout<<"`l' is for common logarithm i.e log10\n";
cout<<"`N' is for atan2\n";
cout<<"`P' is for power\n";
func=getche();
if (func=='+')
{
sum();
cout<<"***********\n";
}
else if (func=='*')
{
product();
cout<<"************\n";
}
else if (func=='-')
{
sub();
cout<<"**************\n";
}
if (func=='D')
{
div();
cout<<"*********\n";
}
else if (func=='R')
{
remainder();
cout<<"***********\n";
}
else if (func=='S')
{
square();
cout<<"*********\n";
}
else if (func=='C')
{
cube();
cout<<"************\n";
}
else if (func=='c')
{
cos();
cout<<"************\n";
}
else if (func=='s')
{
sin();
cout<<"***********\n";
}
else if (func=='t')
{
tan();
cout<<"**************\n";
}
else if (func=='h')
{
	cosh();
	cout<<"************\n";
}
else if (func=='H')
{
sinh();
cout<<"**********\n";
}
else if (func=='T')
{
tanh();
cout<<"**********\n";
}
else if (func=='A')
{
	acos();
	cout<<"*********\n";
}
else if(func=='b')
{
asin();
cout<<"***********\n";
}
else if (func=='d')
{
	atan();
	cout<<"***********\n";
}
else if (func=='E')
{
	exp();
	cout<<"**********\n";
}
else if (func=='L')
{
	log();
	cout<<"**********\n";
}
else if (func=='l')
{
log10();
cout<<"*********\n";
}
else if (func=='N')
{
	atan2();
	cout<<"*******\n";
}
else if (func=='P')
{
	pow();
	cout<<"********\n";
}
getche();
	return 0;
}
void sum()
{
int a,b,sum;
cout<<"\nenter the first number\n";
cin>>a;
cout<<"\nenter the second number\n";
cin>>b;
sum=a+b;
cout<<"sum is"<<sum<<endl;
} 
void product()
{
int a,b,product;
cout<<"\nenter the first number\n";
cin>>a;
cout<<"\nenter the second number\n";
cin>>b;
product=a*b;
cout<<"product is"<<product<<endl;
}
void sub()
{
int a,b,sub;
cout<<"\nenter the first number\n";
cin>>a;
cout<<"\nenter the second number\n";
cin>>b;
sub=a-b;
cout<<"subtraction is"<<sub<<endl;
}
void div()
{
int a,b,div;
cout<<"\nenter the first number\n";
cin>>a;
cout<<"\nenter the second number\n";
cin>>b;
div=a/b;
cout<<"division is"<<div<<endl;
}
void remainder()
{
int a,b,remainder;
cout<<"\nenter the first number\n";
cin>>a;
cout<<"\nenter the second number\n";
cin>>b;
remainder=a*b;
cout<<"remainder is"<<remainder<<endl;
}
void square()
{
int a,square;
cout<<"\nenter the number\n";
cin>>a;
square=a*a;
cout<<"square is"<<square<<endl;
}
void cube()
{
int a,cube;
cout<<"\nenter the number\n";
cin>>a;
cube=a*a*a;
cout<<"cube is"<<cube<<endl;
}
void cos()
{
double a,result,PI=3.14159265;
cout<<"\nenter the angle\n";
cin>>a;
result = cos (a*PI/180);
cout<<"the cosine of "<<a<<" is "<<result<<endl;
}
void sin()
{
double a,result,PI=3.14159265;
cout<<"\nenter the angle\n";
cin>>a;
result = sin (a*PI/180);
cout<<"the sine of "<<a<<" is "<<result<<endl;
}
void tan()
{
double a,result,PI=3.14159265;
cout<<"\nenter the angle\n";
cin>>a;
result = tan (a*PI/180);
cout<<"the tan of the "<<a<<" is "<<result<<endl;
}
void cosh()
{
double a,result,PI=3.14159265;
cout<<"\nenter the angle\n";
cin>>a;
result = cosh (a);
cout<<"the hyperbolic cosine of "<<a<<" is "<<result<<endl;
}
void sinh()
{
double a,result,PI=3.14159265;
cout<<"\nenter the angle\n";
cin>>a;
result = sinh (a);
cout<<"the hyperbolic sine of "<<a<<" is "<<result<<endl;
}
void tanh()
{
double a,result,PI=3.14159265;
cout<<"\nenter the angle\n";
cin>>a;
result = tanh (a);
cout<<"The hyperbolic tangent of "<<a<<" is "<<result<<endl;
}
void acos()
{
double a,result,PI=3.14159265;
cout<<"\nenter the angle\n";
cin>>a;
result = acos (a) * 180.0 / PI;
cout<<"The arc cosine of "<<a<<" is "<<result<<endl;
}
void asin()
{
double a,result,PI=3.14159265;
cout<<"\nenter the angle\n";
cin>>a;
result = asin (a) * 180.0 / PI;
cout<<"The arc sine of "<<a<<" is "<<result<<endl;
}
void atan()
{
double a,result,PI=3.14159265;
cout<<"\nenter the angle\n";
cin>>a;
result = tanh (a);
cout<<"The arc tangential of "<<a<<" is "<<result<<endl;
}
void exp()
{
double a,result;
cout<<"\nenter the number\n";
cin>>a;
result = exp (a);
cout<<"The exponential value of "<<a<<" is = "<<result<<endl;
}
void log()
{
double a, result;
cout<<"\nenter the value to take a log \n";
cin>>a;
result = log (a);
cout<<"The logarithm of "<<a<<" is "<<result<<endl;
}
void log10()
{
double a, result;
cout<<"\nenter the value to take a log \n";
cin>>a;
result = log10 (a);
cout<<"The common logarithm of "<<a<<" is "<<result<<endl;
}
void atan2()
{
float a,b,result,PI=3.14;
cout<<"\nenter the first number\n";
cin>>a;
cout<<"\nenter second the number\n";
cin>>b;
result = atan2 (a,b) * 180 / PI;
cout<<"The arc tangent for "<<a<<" and "<<b<<" is "<<result<<endl;
}
void pow()
{
int a,b,pow;
cout<<"\nenter the number\n";
cin>>a;
cout<<"\nenter the power\n";
cin>>b;
(a^b)=pow (a,b);
cout<<"\n"<<a<<"raise to power"<<b<<"is"<<(a^b);
}

Edited 6 Years Ago by Nick Evan: Added code-tags

a^b is not a to the b power, it is (a XOR b)

int power = pow(a,b); will work (of your functions and variables and the cmath functions many have the same name which can be confusing at best

P.S. Please use code tags //your code here next time to make it easier to read and maintain the formatting

Edited 3 Years Ago by mike_2000_17: Fixed formatting

Please change the variable names inside the functions that have the same name as the function name.
Like I am copying your code here and showing the problem.
Inside your sum() function you have a viriable sum.
same in product and other functions also.
#
void sum()
#
{
#
int a,b,sum; needs to be changed
#
cout<<

Here you have the solution.
Sorry for the previous reply. I didn't read the question correctly for the first time.
Also if you post something here you cannot even edit or delete.


#include<iostream>
//
#include<cmath>

//
using namespace std;
//
void sum();
//
void product();
//
void sub();
//
void div();
//
void remainder();
//
void square();
//
void cube();
//
void cos();
//
void sin();
//
void tan();
//
void cosh();
//
void sinh();
//
void tanh();
//
void acos();
//
void asin();
//
void atan();
//
void exp();
//
void log();
//
void log10();
//
void atan2();
//
void pow();
//
int main()
//
{
//
cout<<"i am going to use a functional aproach to make a calculator"<<endl;
//
char func;
//
cout<<"enter function you want to perform(+,*,D,-,R,S,C,c,s,t,h,H,T,A,b,d,E,L,l,N,P): \n";
//
cout<<"KEY :\n";
//
cout<<"`+' is for addition\n";
//
cout<<"`*' is for multiplication\n";
//
cout<<"`D' is for division\n";
//
cout<<"`-' is for subtraction \n";
//
cout<<"`R' is for remainder\n";
//
cout<<"`S' is for square\n";
//
cout<<"`C' is for cube\n";
//
cout<<"`c' is for cosine\n";
//
cout<<"`s' is for sine\n";
//
cout<<"`t' is for tangent\n";
//
cout<<"`T' is for hyperbolic tangent\n";
//
cout<<"`h' is for hyperbolic cosine\n";
//
cout<<"`H' is for hyperbolic sine\n";
//
cout<<"`A' is for arc cosine\n";
//
cout<<"`b' is for arc sine\n";
//
cout<<"`d' is for arc tangential\n";
//
cout<<"`E' is for exponent\n";
//
cout<<"`L' is for logarithm\n";
//
cout<<"`l' is for common logarithm i.e log10\n";
//
cout<<"`N' is for atan2\n";
//
cout<<"`P' is for power\n";
//
cin >> func;
//
if (func=='+')
//
{
//
sum();
//
cout<<"***********\n";
//
}
//
else if (func=='*')
//
{
//
product();
//
cout<<"************\n";
//
}
//
else if (func=='-')
//
{
//
sub();
//
cout<<"**************\n";
//
}
//
if (func=='D')
//
{
//
div();
//
cout<<"*********\n";
//
}
//
else if (func=='R')
//
{
//
remainder();
//
cout<<"***********\n";
//
}
//
else if (func=='S')
//
{
//
square();
//
cout<<"*********\n";
//
}
//
else if (func=='C')
//
{
//
cube();
//
cout<<"************\n";
//
}
//
else if (func=='c')
//
{
//
cos();
//
cout<<"************\n";
//
}
//
else if (func=='s')
//
{
//
sin();
//
cout<<"***********\n";
//
}
//
else if (func=='t')
//
{
//
tan();
//
cout<<"**************\n";
//
}
//
else if (func=='h')
//
{
//
cosh();
//
cout<<"************\n";
//
}
//
else if (func=='H')
//
{
//
sinh();
//
cout<<"**********\n";
//
}
//
else if (func=='T')
//
{
//
tanh();
//
cout<<"**********\n";
//
}
//
else if (func=='A')
//
{
//
acos();
//
cout<<"*********\n";
//
}
//
else if(func=='b')
//
{
//
asin();
//
cout<<"***********\n";
//
}
//
else if (func=='d')
//
{
//
atan();
//
cout<<"***********\n";
//
}
//
else if (func=='E')
//
{
//
exp();
//
cout<<"**********\n";
//
}
//
else if (func=='L')
//
{
//
log();
//
cout<<"**********\n";
//
}
//
else if (func=='l')
//
{
//
log10();
//
cout<<"*********\n";
//
}
//
else if (func=='N')
//
{
//
atan2();
//
cout<<"*******\n";
//
}
//
else if (func=='P')
//
{
//
pow();
//
cout<<"********\n";
//
}
//
//
return 0;
//
}
//
void sum()
//
{
//
int a,b,sum;
//
cout<<"\nenter the first number\n";
//
cin>>a;
//
cout<<"\nenter the second number\n";
//
cin>>b;
//
sum=a+b;
//
cout<<"sum is"<<sum<<endl;
//
}
//
void product()
//
{
//
int a,b,product;
//
cout<<"\nenter the first number\n";
//
cin>>a;
//
cout<<"\nenter the second number\n";
//
cin>>b;
//
product=a*b;
//
cout<<"product is"<<product<<endl;
//
}
//
void sub()
//
{
//
int a,b,sub;
//
cout<<"\nenter the first number\n";
//
cin>>a;
//
cout<<"\nenter the second number\n";
//
cin>>b;
//
sub=a-b;
//
cout<<"subtraction is"<<sub<<endl;
//
}
//
void div()
//
{
//
int a,b,div;
//
cout<<"\nenter the first number\n";
//
cin>>a;
//
cout<<"\nenter the second number\n";
//
cin>>b;
//
div=a/b;
//
cout<<"division is"<<div<<endl;
//
}
//
void remainder()
//
{
//
int a,b,remainder;
//
cout<<"\nenter the first number\n";
//
cin>>a;
//
cout<<"\nenter the second number\n";
//
cin>>b;
//
remainder=a*b;
//
cout<<"remainder is"<<remainder<<endl;
//
}
//
void square()
//
{
//
int a,square;
//
cout<<"\nenter the number\n";
//
cin>>a;
//
square=a*a;
//
cout<<"square is"<<square<<endl;
//
}
//
void cube()
//
{
//
int a,cube;
//
cout<<"\nenter the number\n";
//
cin>>a;
//
cube=a*a*a;
//
cout<<"cube is"<<cube<<endl;
//
}
//
void cos()
//
{
//
double a,result,PI=3.14159265;
//
cout<<"\nenter the angle\n";
//
cin>>a;
//
result = cos (a*PI/180);
//
cout<<"the cosine of "<<a<<" is "<<result<<endl;
//
}
//
void sin()
//
{
//
double a,result,PI=3.14159265;
//
cout<<"\nenter the angle\n";
//
cin>>a;
//
result = sin (a*PI/180);
//
cout<<"the sine of "<<a<<" is "<<result<<endl;
//
}
//
void tan()
//
{
//
double a,result,PI=3.14159265;
//
cout<<"\nenter the angle\n";
//
cin>>a;
//
result = tan (a*PI/180);
//
cout<<"the tan of the "<<a<<" is "<<result<<endl;
//
}
//
void cosh()
//
{
//
double a,result,PI=3.14159265;
//
cout<<"\nenter the angle\n";
//
cin>>a;
//
result = cosh (a);
//
cout<<"the hyperbolic cosine of "<<a<<" is "<<result<<endl;
//
}
//
void sinh()
//
{
//
double a,result,PI=3.14159265;
//
cout<<"\nenter the angle\n";
//
cin>>a;
//
result = sinh (a);
//
cout<<"the hyperbolic sine of "<<a<<" is "<<result<<endl;
//
}
//
void tanh()
//
{
//
double a,result,PI=3.14159265;
//
cout<<"\nenter the angle\n";
//
cin>>a;
//
result = tanh (a);
//
cout<<"The hyperbolic tangent of "<<a<<" is "<<result<<endl;
//
}
//
void acos()
//
{
//
double a,result,PI=3.14159265;
//
cout<<"\nenter the angle\n";
//
cin>>a;
//
result = acos (a) * 180.0 / PI;
//
cout<<"The arc cosine of "<<a<<" is "<<result<<endl;
//
}
//
void asin()
//
{
//
double a,result,PI=3.14159265;
//
cout<<"\nenter the angle\n";
//
cin>>a;
//
result = asin (a) * 180.0 / PI;
//
cout<<"The arc sine of "<<a<<" is "<<result<<endl;
//
}
//
void atan()
//
{
//
double a,result,PI=3.14159265;
//
cout<<"\nenter the angle\n";
//
cin>>a;
//
result = tanh (a);
//
cout<<"The arc tangential of "<<a<<" is "<<result<<endl;
//
}
//
void exp()
//
{
//
double a,result;
//
cout<<"\nenter the number\n";
//
cin>>a;
//
result = exp (a);
//
cout<<"The exponential value of "<<a<<" is = "<<result<<endl;
//
}
//
void log()
//
{
//
double a, result;
//
cout<<"\nenter the value to take a log \n";
//
cin>>a;
//
result = log (a);
//
cout<<"The logarithm of "<<a<<" is "<<result<<endl;
//
}
//
void log10()
//
{
//
double a, result;
//
cout<<"\nenter the value to take a log \n";
//
cin>>a;
//
result = log10 (a);
//
cout<<"The common logarithm of "<<a<<" is "<<result<<endl;
//
}
//
void atan2()
//
{
//
float a,b,result,PI=3.14;
//
cout<<"\nenter the first number\n";
//
cin>>a;
//
cout<<"\nenter second the number\n";
//
cin>>b;
//
result = atan2 (a,b) * 180 / PI;
//
cout<<"The arc tangent for "<<a<<" and "<<b<<" is "<<result<<endl;
//
}
//
void pow()
{
int a,b, power;
cout<<"\nenter the number\n";
cin>>a;
cout<<"\nenter the power\n";
cin>>b;
power = pow(a,b);
cout<<"\n"<<a<<" raise to power "<<b<<" is "<< power;

}

Edited 6 Years Ago by Sardar Faisal: n/a

Comments
That is some of the worst code I've ever seen!
Puke puke puke - what an utter DISASTER of a code formatting - read some intro threads!!!!FFS
This article has been dead for over six months. Start a new discussion instead.