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05-05-2008, 08:58 AM
| #1 |
| Registered User Join Date: May 2008
Posts: 1
| Vectors Vectors are very important in mathematical computing and in computer graphics .Vector graphics is economical in its use of memory, as an entire line segment is specified simply by the coordinates of its endpoints. A vector can be represented by an arrow whose length represents the magnitude and the direction represents the vector direction. The above vector a can be represented as a = [a1, a2] The arithmetic operations can be performed in the following way: o Addition If a and b are two vectors a = [a1, a2] b = [b1, b2] then the sum of a and b is a + b = [a1+b1 , a2+b2] o Subtraction If a and b are two vectors a = [a1, a2] b = [b1, b2] then the difference of a and b is a - b = [a1-b1 , a2-b2] o Multiplication If a and b are two vectors a = [a1, a2] b = [b1, b2] then dot product of a and b is a . b = (a1 * b1 ) + ( a2 * b2) o Length of vector If a is a vector a = [a1, a2] then the length of vector a is length = Assignment Write a C++ program that performs the above mentioned operations on vectors with the help of above mentioned formulae. The program should have four user defined functions for the above operations. 1) Addition 2) Subtraction 3) Multiplication 4) Length The following menu of commands should be displayed at the start of program execution. Press 'a' to add two vectors Press 's' to subtract two vectors Press 'm' to multiply two vectors Press 'l to calculate the length of vector Press 'q' to quit Please enter your choice: a After the user selects a choice, prompt the user to enter the vector components on which the selected mathematical operation is to be performed, and then display the result. For example, if the user enters a then your output should be: Enter first component of vector : 2 Enter second component of vector : 7 The vector is : [ 2 , 7 ] Enter first component of vector : 6 Enter second component of vector : 3 The vector is : [ 6 , 3 ] The sum is [ 8 , 10 ] if the user enters s then your output should be : Enter first component of vector : 2 Enter second component of vector : 7 The vector is : [ 2 , 7 ] Enter first component of vector : 6 Enter second component of vector : 3 The vector is : [ 6 , 3 ] The difference is [ -4 , 4] if the user enters m then your output should be : Enter first component of vector : 2 Enter second component of vector : 7 The vector is : [ 2 , 7 ] Enter first component of vector : 6 Enter second component of vector : 3 The vector is : [ 6 , 3 ] The multiplication is 33 After the menu if the user selects l then your output should be Enter first component of vector : 1 Enter second component of vector : 2 The vector is : [ 1 , 2 ] The length is 2.23607 After the menu if the user selects q then your output should be Press any key to continue .. Conditions that must be checked and fulfilled: 1) If a user enters choice other then choices given in menu, then a message should be displayed You have entered wrong choice: and main menu should be displayed again. 2) If a used enters a ,s or m then you have to take components of two vectors then do calculation on them 3) If a user enters l then you have to take components of one vector only then do calculation on it. |
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05-05-2008, 09:05 AM
| #2 |
| C++ Witch  Join Date: Oct 2003 Location: Singapore
Posts: 10,368
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__________________ C + C++ Compiler: MinGW port of GCC Build + Version Control System: SCons + Bazaar Look up a C/C++ Reference and learn How To Ask Questions The Smart Way |
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05-05-2008, 09:08 AM
| #3 |
| Afraid of widths  Join Date: Apr 2008 Location: Chicago
Posts: 887
| When is this homework assignment due? |
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05-05-2008, 09:13 AM
| #4 |
| Ethernal Noob Join Date: Nov 2001
Posts: 1,888
| This is actually really easy. If you do it. |
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05-05-2008, 09:32 AM
| #5 |
| Cat without Hat  Join Date: Apr 2003
Posts: 8,439
| Do you actually have a question, or should I just close the thread?
__________________ All the buzzt!  CornedBee"There is not now, nor has there ever been, nor will there ever be, any programming language in which it is the least bit difficult to write bad code." - Flon's Law |
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05-05-2008, 11:00 AM
| #6 |
| and the hat of sweating Join Date: Aug 2007 Location: Toronto, ON
Posts: 3,120
| If it were up to me, I'd just close it since it seems pointless and waste's people's time. |
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05-09-2008, 07:03 AM
| #7 |
| Registered User Join Date: May 2008
Posts: 6
| Vectors Vectors are very important in mathematical computing and in computer graphics .Vector graphics is economical in its use of memory, as an entire line segment is specified simply by the coordinates of its endpoints. A vector can be represented by an arrow whose length represents the magnitude and the direction represents the vector direction. The above vector a can be represented as a = [a1, a2] The arithmetic operations can be performed in the following way: o Addition If a and b are two vectors a = [a1, a2] b = [b1, b2] then the sum of a and b is a + b = [a1+b1 , a2+b2] o Subtraction If a and b are two vectors a = [a1, a2] b = [b1, b2] then the difference of a and b is a - b = [a1-b1 , a2-b2] o Multiplication If a and b are two vectors a = [a1, a2] b = [b1, b2] then dot product of a and b is a . b = (a1 * b1 ) + ( a2 * b2) o Length of vector If a is a vector a = [a1, a2] then the length of vector a is length = Assignment Write a C++ program that performs the above mentioned operations on vectors with the help of above mentioned formulae. The program should have four user defined functions for the above operations. 1) Addition 2) Subtraction 3) Multiplication 4) Length The following menu of commands should be displayed at the start of program execution. Press 'a' to add two vectors Press 's' to subtract two vectors Press 'm' to multiply two vectors Press 'l to calculate the length of vector Press 'q' to quit Please enter your choice: a After the user selects a choice, prompt the user to enter the vector components on which the selected mathematical operation is to be performed, and then display the result. For example, if the user enters a then your output should be: Enter first component of vector : 2 Enter second component of vector : 7 The vector is : [ 2 , 7 ] Enter first component of vector : 6 Enter second component of vector : 3 The vector is : [ 6 , 3 ] The sum is [ 8 , 10 ] if the user enters s then your output should be : Enter first component of vector : 2 Enter second component of vector : 7 The vector is : [ 2 , 7 ] Enter first component of vector : 6 Enter second component of vector : 3 The vector is : [ 6 , 3 ] The difference is [ -4 , 4] if the user enters m then your output should be : Enter first component of vector : 2 Enter second component of vector : 7 The vector is : [ 2 , 7 ] Enter first component of vector : 6 Enter second component of vector : 3 The vector is : [ 6 , 3 ] The multiplication is 33 After the menu if the user selects l then your output should be Enter first component of vector : 1 Enter second component of vector : 2 The vector is : [ 1 , 2 ] The length is 2.23607 After the menu if the user selects q then your output should be Press any key to continue .. Conditions that must be checked and fulfilled: 1) If a user enters choice other then choices given in menu, then a message should be displayed You have entered wrong choice: and main menu should be displayed again. 2) If a used enters a ,s or m then you have to take components of two vectors then do calculation on them 3) If a user enters l then you have to take components of one vector only then do calculation on it. |
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05-09-2008, 07:05 AM
| #8 |
| Registered User Join Date: May 2008
Posts: 6
| Code: #include<iostream.h>
#include <math.h>
#include<process.h>
#include<conio.h>
// prototype for the the functions
void getVect(int &s, int &e );
void addition();
void subtraction();
void multiplication();
void length();
int main() // function main begins program execution
{
// let the user know about the program
clrscr();
cout << "\n\n\t program that describes something about vectors.";
char choice;
do{
cout << "\n\n \t\t\t 'M E N U' ";
cout << "\n\n\t\tAddition : A";
cout << "\n\t\tSubtraction : S";
cout << "\n\t\tMultiplication : M";
cout << "\n\t\tLength : L";
cout << "\n\t\tQuit : Q";
cout << "\n\n\t\tEnter your choice ";
cin >> choice;
//ff convert the choice to lower case
if ( choice < 97)
choice +=32;
switch ( choice )
{
case 'a' : addition();
break;
case 's' : subtraction();
break;
case 'm' : multiplication();
break;
case 'l' : length();
break;
case 'q' : //ff pause the screen
cout << "\n\n\t";
exit(0);
break;
default : cout << "\n\n\tYou have entered wrong choice";
} //ff end switch
} while (choice !='q'); // end do-while
return 0; //ff indicate program executed successfully
} //ff end of function, main
void getVect( int &f, int &s )
{
//fix" prompt and read the values into the vector
cout << "\n\tEnter the values for the vector:";
cout << "\n\tFirst Component : ";
cin >> f;
cout << "\tSecond Component : ";
cin >>s;
cout << "'\tThe vector is [ " << f << " , " << s << " ]";;
} // end function getVect
void addition()
{
//ff declare the variables
int a1, a2, b1, b2 ;
//ff get the values for the first vector
getVect( a1, a2 );
//ff get the values for the second vector
getVect( b1, b2 );
//ff do the addition
cout<< "\n\n\tThe sum is [ " << ( a1 + b1 )<< "," << ( a2 + b2 ) << "]" ;
} //ff end function addition
void subtraction()
{
// declare the variables
int al, a2, bl, b2 ;
//ff get the values for the first vector
getVect( al, a2 );
//ff get the values for the second vector
getVect( bl, b2 );
//ff do the subtraction
cout << "\n\n\tIhe difference is [ " << ( al - bl )<<", "<<(a2-b2)<<"]";
} //fs'] end function subtraction
void multiplication()
{
//fix" declare the variables
int al, a2, bl, b2 ;
//fra" get the values for the first vector
getVect(al, a2) ;
//fra" get the values for the second vector
getVect( bl, b2 );
//ff do the multiplication
cout << "\n\n\tThe product is [ " << ( al * bl )<< ", " << (a2 * b2) <<"]";
}// ff end function multiplication
void length()
{
//ff declare the variables
int a1, a2;
float len;
//ff get the values for the vector
getVect(a1,a2);
//fir'] find the length
a1=a1*a1;
a2=a2*a2;
len=a1+a2;
len=sqrt(len);
cout << "\n\n\tlength is "<<len;
}
// end function length
|
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05-09-2008, 07:07 AM
| #9 | |
| Registered User Join Date: May 2008
Posts: 6
| Code: #include<iostream.h>
#include <math.h>
#include<process.h>
#include<conio.h>
// prototype for the the functions
void getVect(int &s, int &e );
void addition();
void subtraction();
void multiplication();
void length();
int main() // function main begins program execution
{
// let the user know about the program
clrscr();
cout << "\n\n\t program that describes something about vectors.";
char choice;
do{
cout << "\n\n \t\t\t 'M E N U' ";
cout << "\n\n\t\tAddition : A";
cout << "\n\t\tSubtraction : S";
cout << "\n\t\tMultiplication : M";
cout << "\n\t\tLength : L";
cout << "\n\t\tQuit : Q";
cout << "\n\n\t\tEnter your choice ";
cin >> choice;
//ff convert the choice to lower case
if ( choice < 97)
choice +=32;
switch ( choice )
{
case 'a' : addition();
break;
case 's' : subtraction();
break;
case 'm' : multiplication();
break;
case 'l' : length();
break;
case 'q' : //ff pause the screen
cout << "\n\n\t";
exit(0);
break;
default : cout << "\n\n\tYou have entered wrong choice";
} //ff end switch
} while (choice !='q'); // end do-while
return 0; //ff indicate program executed successfully
} //ff end of function, main
void getVect( int &f, int &s )
{
//fix" prompt and read the values into the vector
cout << "\n\tEnter the values for the vector:";
cout << "\n\tFirst Component : ";
cin >> f;
cout << "\tSecond Component : ";
cin >>s;
cout << "'\tThe vector is [ " << f << " , " << s << " ]";;
} // end function getVect
void addition()
{
//ff declare the variables
int a1, a2, b1, b2 ;
//ff get the values for the first vector
getVect( a1, a2 );
//ff get the values for the second vector
getVect( b1, b2 );
//ff do the addition
cout<< "\n\n\tThe sum is [ " << ( a1 + b1 )<< "," << ( a2 + b2 ) << "]" ;
} //ff end function addition
void subtraction()
{
// declare the variables
int al, a2, bl, b2 ;
//ff get the values for the first vector
getVect( al, a2 );
//ff get the values for the second vector
getVect( bl, b2 );
//ff do the subtraction
cout << "\n\n\tIhe difference is [ " << ( al - bl )<<", "<<(a2-b2)<<"]";
} //fs'] end function subtraction
void multiplication()
{
//fix" declare the variables
int al, a2, bl, b2 ;
//fra" get the values for the first vector
getVect(al, a2) ;
//fra" get the values for the second vector
getVect( bl, b2 );
//ff do the multiplication
cout << "\n\n\tThe product is [ " << ( al * bl )<< ", " << (a2 * b2) <<"]";
}// ff end function multiplication
void length()
{
//ff declare the variables
int a1, a2;
float len;
//ff get the values for the vector
getVect(a1,a2);
//fir'] find the length
a1=a1*a1;
a2=a2*a2;
len=a1+a2;
len=sqrt(len);
cout << "\n\n\tlength is "<<len;
}// end function length
Quote:
| |
| basharat is offline |
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05-09-2008, 07:13 AM
| #10 |
| Registered User Join Date: May 2008
Posts: 6
| this problem is from dev cpp how to program c++ |
| basharat is offline |
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05-09-2008, 08:13 AM
| #11 |
| Its hard... But im here  Join Date: Apr 2005 Location: England
Posts: 1,466
| Could a MOD close this? I really cannot see the point in it. No questions asked about the subject, and the code is non-standard in places anyway.
__________________ I'm just trying to be a better person - My Name Is Earl |
| swgh is offline |
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05-09-2008, 08:21 AM
| #12 |
| C++ Witch Join Date: Oct 2003 Location: Singapore
Posts: 10,368
| Indeed, basharat obviously ignored my instruction to read about our homework policy. *thread closed*
__________________ C + C++ Compiler: MinGW port of GCC Build + Version Control System: SCons + Bazaar Look up a C/C++ Reference and learn How To Ask Questions The Smart Way |
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