1. ## Vectors

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:

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.

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

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.

2. Moved to the C++ forum.

3. When is this homework assignment due?

4. This is actually really easy. If you do it.

5. Do you actually have a question, or should I just close the thread?

6. If it were up to me, I'd just close it since it seems pointless and waste's people's time.

7. 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:

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.

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

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.

8. 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 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\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 )
{
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

{
//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 );
cout<< "\n\n\tThe sum is [ " << ( a1 + b1 )<< "," << ( a2 + b2 ) << "]" ;

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\tIhe 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```

9. 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 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\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 )
{
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

{
//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 );
cout<< "\n\n\tThe sum is [ " << ( a1 + b1 )<< "," << ( a2 + b2 ) << "]" ;

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\tIhe 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```
Originally Posted by naseerhaider
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:

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.

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

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.

10. this problem is from dev cpp
how to program c++

11. 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.

12. Indeed, basharat obviously ignored my instruction to read about our homework policy.