Question

Develop a flowchart and then write a menu-driven C++ program that uses several FUNCTIONS to solve the following program.

-Use Microsoft Visual C++ .NET 2010 Professional compiler using default compiler settings.

-Use Microsoft Visio 2013 for developing your flowchart.

-Adherence to the ANSI C++  required

-Do not use <stdio.h> and <conio.h>.

-Do not use any #define in your program.

-No goto statements allowed.

Upon execution of the program, the program displays a menu as shown below and the user is prompted to make a selection from the menu.

The menu options are:

Help SubIntegers   MulIFloats   Quit             

Once the menu item is selected and validated, the program will proceed with processing that selection as explained below.

If the user selects h or H, the program uses function help to display a help screen and tells the user how the program operates and what is needed from the user and how the program is terminated.

Once the user viewed the help screen, striking any key will follow with
the display of the menu again.

 

Suggested help function prototype is:

 

 void help(void);

 

If the user selects s, or S function SubIntegers() is called and the user is prompted for two valid numbers of type int. Use function getInteger() to read an integer data from the user and return that value via the return statement to the function SubIntegers(). Function getInteger() is called twice to read the two operands needed for the subtraction operation. The SubIntegers() function will then call function displayIntegers() to display the two operands and the difference in the format shown below. For example, if the two double numbers are 18 and 40, then the result is displayed as shown below.

 

The difference is    18 - 40 = -22

 

There must be two digits after the decimal point.

 

Once the user viewed the result, striking any key will clear the screen, followed by display of the menu again. Function displayIntegers() will return the control to SubIntegers() and SubIntegers() will return the control back to the main() function where the instruction for the menu display was initiated.

function prototypes for this option are:

 void SubIntegers(void);

 

 int getInteger(void);

 

 void displayIntegers(int n1, int n2, int d);

 

If the user selects m, or M, function MulFloats() is called and the user is prompted for two valid numbers of type float. Use function getIFloat() to read a float data from the user and returns that value via the return statement to the function MulFloats(). Function getFloat() is called twice to read the two operands needed for the multiplication operation. The MulFloats() function will then call function displayFloats() to display the two operands and the product in the format shown below. For example, if the two float numbers are 6.34 and -36.45, then the result is displayed as shown below.

 

The product of    6.340 * -36.450 = -231.093

 

Once the user viewed the result, striking any key will clear the screen, followed by display of the menu again. Function displayFloats() will return the control to MulFloats() and MulFloats() will return the control back to the main() function where the instruction for the menu display was initiated.

 

Suggested function prototypes for this option are:

 void MulFloats(void);

 

 int getFloat(void);

 

 void displayIntegers(float& n1, float& n2, float& s);

 

 

Once the user viewed the result, striking any key will clear the screen, followed by display of the menu again.

 

If the user selects q or Q, the program clears the screen, displays the following message and the program will then terminate.

 

The program terminated per the user request…

 

Any other menu selection will be flagged as an error and the user is warned to make a valid selection from the menu, and the menu is displayed again. The wrong input should not terminate the program.

 

Once the program begins execution, it will not terminate until the user inputs q or Q.

Answer 1

Solution :

start read If N心刈蟲N ) Read a.h Switch n

  

     

C. Case Print Case 2 Prirst Case 1 8 STOP

Figure : Flowchart   

CODE :

#include<stdio.h>

#include<conio.h>

Void main()

{

Int a,b,c,n;

Clrscr();

Printf(“ \n –menu-- “);

Printf(“\n 1 addition”);

Printf(“\n 2 subtraction”);

Printf(“\n 3 multiplication”);

Printf(“\n4 division”);

Printf(“\n enter your choice : “);

Scanf(“%d”,&n); If(n<=4 & n>0)

{

Printf(“\n enter two numbers”);

Scanf(“%d %d”,&a,&b);

}

switch(n)

{

case 1: c=a+b;

printf(“\n Addition : %d”,c);

break;

case 2: c=a-b;

printf(“\n subtraction: %d”,c);

break;

case 3: c=a*b;

printf(“\n multiplication: %d”,c);

break;

case 4: c=a/b;

printf(“\n division:%d”,c);

break;

default:

printf(“\n invalid operation code”);

}

getch();

}