C / C++ / MFC

#import "..\..\..\dll\msadox.dll"     // Importing Adox unchanged in this example
#import "..\..\..\dll\msado15.dll" no_namespace rename("EOF", "EOFADO")rename("DataTypeEnum", "DataTypeEnumADO") rename("EditModeEnum", "EditModeEnumADO") \
rename("FieldAttributeEnum", "FieldAttributeEnumADO") rename("LockTypeEnum", "LockTypeEnumADO")   // Rename each function you want to use into current namespace with ADO at end

// The ADO at the end just makes remembering the name easy

Member 12485116 wrote:

...i am not not able build/Run the project.
and i can see lots of External Dependencies are being referred from Program files.

#ifndef _MYCODE_
#define _MYCODE_

// Place public defines, structures  etc here .. random couple of sample defines as example
#define DEV_OK			0	// No device error
#define DEV_ERROR       -1	// Device access error

// Some prototype functions I will define in the main body file
void MyFunction1 (int someValue);
int MyFunction2 (void);

#endif 

#include "mycode.h"  // Include your own header file

// Private internal stuff not visible outside the unit because its not in .H file

// An private integer which will just hold our function value
int CurrentValue = 0;

// Our prototype functions now get code

void MyFunction1 (int someValue){
   CurrentValue = someValue;    // Lets just hold value passed in
}

int MyFunction2 (void){
   return (currentValue);       // Just return current value
}

#ifndef _CALCULATION_H
#define _CALCULATION_H
#include "calculation.cpp"
#include "getinput.cpp"

void input_Func(void); //Input function of text.
void input_Area(void); //Input function of Area.
void input_Trap(void); //Input function of Trapezoid.
float rectangle_Area (float , float); //Declaration for Rectangle Area.
float trapezoid_Area (float , float, float); //Declaration for Trapezoid Area.

#endif

#include "calculation.h"

//Calculation of Rectangle Area.
float rectangleArea (float width, float length)
{
    float Area_Rectange = 0;
    Area_Rectange = width * length;
    return (Area_Rectange);
}

//Calculation of Trapezoid Area.
float trapezoidArea (float base1, float base2, float height)
{
    float Area_Trapezoid = 0;
    Area_Trapezoid = ((base1 + base2)/2) * height;
    return (Area_Trapezoid);
}

#include "calculation.h"

//Dealing with the input and output of data
void input_Func(void)
{
    cout << "\n\nEnter 1 to calculate the area of Rectangle" << endl;
    cout << "Enter 2 to calculate the area of a Trapezoid" << endl;
    cout << "\n\nEnter your choice : ";
    cin >> choice;
}

    //Dealing with input of Rectangle
    float input_Area(void)
    {
        float width = 0, length = 0, answer = 0;
        cout << "Enter the width of rectangle :";
        cin >> width;
        cout << "Enter the length of rectangle :";
        cin >> length;
        answer = rectangleArea(width, length);
        cout << "The area of Rectangle is : " << answer << endl;
        break;
    }

        //Dealing with input of Trapezoid.
        float input_Trap(void)
        {
            float base1 = 0, base2 = 0, height = 0, answer = 0;
            cout << "Enter base1 of trapezoid : ";
            cin >> base1;
            cout << "Enter base2 of trapezoid : ";
            cin >> base2;
            cout << "Enter the height of trapezoid : ";
            cin >> height;
            answer  = trapezoidArea(base1, base2, height);
            cout << "The area of Trapezoid is : " << answer << endl;
            break;
        }

/*
-------------------------
Name = Syed Sibt E Hassan
Registration Number = MC160201226
-------------------------
1) Input from the user
2) Function Calls
3) Exit when press 'N'
*/

#include <iostream>
#include "calculation.h"

using namespace std;

int main()
{
    int choice = 0;
    char tryagain = 0;
    do
            input_Func();

            switch(choice)
            {
            case 1:
                {
                    input_Area(); //Get Input of values for Rectangle
                    rectangle_Area (float , float);
                }
            case 2:
                {
                    input_Trap(); //Get Input of Values for Trapezoid
                    trapezoid_Area(float, float, float);
                }
            default:{
                cout << "Neither 1 nor 2 entered." << endl;
                }
            }

            cout << "Do you want to do another calculation? : ";
            cin >> tryagain;
        }while (tryagain == 'Y' || tryagain == 'y');

    return 0;
}

#ifndef _CALCULATION_H
#define _CALCULATION_H
#include "calculation.cpp"
#include "getinput.cpp"
// ...

• One named calculation.h with the declarations for the calculation.c source file
• One named getinput.h with the declarations for the getinput.c source file
• Optionally one named according to your project name with global declarations used by multiple source files and public declarations for your main.c source file

#ifndef _CALCULATION_H
#define _CALCULATION_H

void input_Func(void); //Input function of text.
void input_Area(void); //Input function of Area.
void input_Trap(void); //Input function of Trapezoid.
float rectangle_Area (float , float); //Declaration for Rectangle Area.
float trapezoid_Area (float , float, float); //Declaration for Trapezoid Area.

#endif

#include "calculation.h"   // include you header file 

//Calculation of Rectangle Area.
float rectangleArea (float width, float length)
{
    float Area_Rectange = 0;
    Area_Rectange = width * length;
    return (Area_Rectange);
}
 
//Calculation of Trapezoid Area.
float trapezoidArea (float base1, float base2, float height)
{
    float Area_Trapezoid = 0;
    Area_Trapezoid = ((base1 + base2)/2) * height;
    return (Area_Trapezoid);
}

//Dealing with the input and output of data
void input_Func(void)
{
    cout << "\n\nEnter 1 to calculate the area of Rectangle" << endl;
    cout << "Enter 2 to calculate the area of a Trapezoid" << endl;
    cout << "\n\nEnter your choice : ";
    cin >> choice;
}

// YOU HAVE SERIOUS ERRORS IN THE TWO FUNCTION CODES BELOW

//Dealing with input of Rectangle
float input_Area(void)  // *** ERROR *** YOUR HEADER HEADER FILE IS ==== > void input_Area(void);  WHICH IS IT THEY MUST MATCH??????
{
   float width = 0, length = 0, answer = 0;
   cout << "Enter the width of rectangle :";
   cin >> width;
   cout << "Enter the length of rectangle :";
   cin >> length;
   answer = rectangleArea(width, length);
   cout << "The area of Rectangle is : " << answer << endl;

   
   break;  // <<==== ***** ERROR ***** WHAT ARE YOU BREAKING FROM
   
   /// ***** ERROR *****
   // There is another problem here you have not returned anything 
   // You declare you are going to return a float and don't ..  You put this === > float input_Area(void)
   //
   // I think you may want to return the variable Answer but your code matches
   // the header file returning nothing so I am confused what you are doing
   //
   // You need to be clear are you returning a float or not and fix it
}
 
//Dealing with input of Trapezoid.
float input_Trap(void)    // *** ERROR *** YOUR HEADER HEADER FILE IS ==== > void input_Trap(void);  WHICH IS IT THEY MUST MATCH ??????
{
   float base1 = 0, base2 = 0, height = 0, answer = 0;
   cout << "Enter base1 of trapezoid : ";
   cin >> base1;
   cout << "Enter base2 of trapezoid : ";
   cin >> base2;
   cout << "Enter the height of trapezoid : ";
   cin >> height;
   answer  = trapezoidArea(base1, base2, height);
   cout << "The area of Trapezoid is : " << answer << endl;
   
   break;  // <<==== ***** ERROR ***** WHAT ARE YOU BREAKING FROM
   
   /// ***** ERROR *****
   // There is another problem here you have not returned anything
   // You declare you are going to return a float and don't .. You put this === > float input_Trap(void)
   //
   // I think you may want to return the variable Answer but your code matches
   // the header file returning nothing so I am confused what you are doing
   //
   // You need to be clear are you returning a float or not and fix it
}

Hassan Syed1 wrote:

When I write whole code in main it works well as soon as put the code in separate files I started getting error.

void input_Area(void); //Input function of Area.

float input_Area(void){

float input_Area(void); //Input function of Area.

void input_Area(void){

float rectangleArea (float width, float length)  // * PT1 ... HERE YOU DECLARE YOU ARE RETURNING A FLOAT .. the first word is FLOAT not VOID 
{
    float Area_Rectange = 0;
    Area_Rectange = width * length;
    return (Area_Rectange);  // *** HERE YOU RETURN A FLOAT ... which is exactly what you said at PT1 ... HENCE THIS CODE IS CORRECT
}

/*
-------------------------
Name = Syed Sibt E Hassan
Registration Number = MC160201226
-------------------------
1) Input from the user
2) Function Calls to reactangle and trapezoid
3) Exit loop when input is not 'Y' || 'y'
*/

#include <iostream>
using namespace std;

float rectangleArea (float , float); //Declaration for Rectangle Area
float trapezoidArea (float , float, float); //Declaration for Trapezoid Area.

int main()
{
    int choice = 0;
    char tryagain = 0;
    do
      {
        cout << "\n\nEnter 1 to calculate the area of Rectangle" << endl;
        cout << "Enter 2 to calculate the area of a Trapezoid" << endl;
        cout << "\n\nEnter your choice : ";
        cin >> choice;
            switch(choice)
            {
                         //Dealing with area of Rectangle.
            case 1:
                {

                    float width = 0.0, length = 0.0, answer = 0.0;
                    cout << "Enter the width of rectangle :";
                    cin >> width;
                    cout << "Enter the length of rectangle :";
                    cin >> length;
                    answer = rectangleArea(width, length); //Function Call to Rectangle
                    cout << "The area of Rectangle is : " << answer << endl;
                    break;
                }

                         //Dealing with area of Trapezoid.
            case 2:
                {

                    float base1 = 0.0, base2 = 0.0, height = 0.0, answer = 0.0;
                    cout << "Enter base1 of trapezoid : ";
                    cin >> base1;
                    cout << "Enter base2 of trapezoid : ";
                    cin >> base2;
                    cout << "Enter the height of trapezoid : ";
                    cin >> height;
                    answer  = trapezoidArea(base1, base2, height); //Function Call to Trapezoid
                    cout << "The area of Trapezoid is : " << answer << endl;
                    break;
                }

            default:{
                cout << "Neither 1 nor 2 entered." << endl;
                }
            }

            cout << "\n Do you want to do another calculation? : ";
            cin >> tryagain;
        }while (tryagain == 'Y' || tryagain == 'y');

    return 0;
}

//Calculation of Rectangle Area.
float rectangleArea (float width, float length)
{
    float Area_Rectange = 0.0;
    Area_Rectange = width * length;
    return (Area_Rectange);
}

//Calculation of Trapezoid Area.
float trapezoidArea (float base1, float base2, float height)
{
    float Area_Trapezoid = 0.0;
    Area_Trapezoid = height * (base1 + base2)/2;
    return (Area_Trapezoid);
}