Solved

Calling Functions

Posted on 2000-04-19
4
193 Views
Last Modified: 2010-04-02
What is the right way to call a function in a program?
0
Comment
Question by:SBuntin
  • 3
4 Comments
 
LVL 22

Accepted Solution

by:
nietod earned 30 total points
ID: 2731978
you use the functin name a left parenthises, then any parameters, then a right parenthesis.

example follows.
0
 
LVL 22

Expert Comment

by:nietod
ID: 2731985
// no parameters.
int GetZero()
{
   return 0;
}

// 1 parameter.
int Increment(int i)
{
   return i +1;
};

// 2 parameters.
int Add(int x,int y)
{
   return x + y;
};

     *    *    *

int x = GetZero();
int y = Increment(x);
int z = Add(x,y);

Let me know if you have any questions.
0
 

Author Comment

by:SBuntin
ID: 2735885
I am having problems linking or something...I really don't know what it is saying...

Here is my problem whats wrong:

#include <iostream.h>
#include <math.h>

void DegreesToRadians();
void RadiansToDegrees();

int main()
{
      int convert;
      int degree, radian;


      cout << "What would you like to convert to?\n";
      cout << "1. Degrees to Radians";
      cout << "2. Radians to Degrees";
      cin >> convert;

      if (convert == 1)
      {
            // Input
            cout << "Degrees? ";
            cin >> degree;

            // Calculations and Output
            DegreesToRadians();
      }

      if (convert == 2)
      {
            // Input
            cout << "Radians? ";
            cin >> radian;

            // Calculations and Output
            RadiansToDegrees();


      }


return 0;
}




float DegreesToRadians(float degree)
{
  float pi = 22 / 7;
  float totalb = degree * (pi/180);

  return totalb;
}

float RadiansToDegrees(float radian)
{
      float pi = 22 / 7;
      float totalB = radian * (180/pi);

      return totalB;
}
0
 
LVL 22

Expert Comment

by:nietod
ID: 2742552
The forward declarations of the 2 conversion functions do not match the function definitions.  Both the definitions take floats as parrameters and return floats as return values.  but your forward definitions take no parameters and return no values.  You should change them to

float DegreesToRadians(float);
float RadiansToDegrees(float);
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
returning a dereferenced pts in C++ 10 157
How to programmatically differentiate between C and Java 10 204
best sources to up-to-date in C++? 8 89
I could not build boost code, 10 94
In days of old, returning something by value from a function in C++ was necessarily avoided because it would, invariably, involve one or even two copies of the object being created and potentially costly calls to a copy-constructor and destructor. A…
Basic understanding on "OO- Object Orientation" is needed for designing a logical solution to solve a problem. Basic OOAD is a prerequisite for a coder to ensure that they follow the basic design of OO. This would help developers to understand the b…
The viewer will learn how to use the return statement in functions in C++. The video will also teach the user how to pass data to a function and have the function return data back for further processing.
The viewer will learn additional member functions of the vector class. Specifically, the capacity and swap member functions will be introduced.

789 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question