C++

Anyone feel like doing some C++ programs for me???
Itll be fun!
And you will be loved forever!

Consider two vectors A and B specified in rectangular coordinates that have their tails fixed at the origin (x, y, z) = (0, 0, 0). The cosine of the included angle  between the vectors is given by

    cos y = (A  B) / (|A| |B| )

where the “dot product” is defined as

A . B = xA xB + yA yB + zA zB

and the magnitudes of the vectors are defined as

    |A| = sqrt (xA2 + yA2 + zA2)

    |B| = sqrt (xB2 + yB2 + zB2)


Knowing the rectangular components of the vectors, we can use the above formulas to compute cos y and from it the included angle y.


For this project, write a C program that prompts the user for the two vectors and calculates the angle between them. This program should employ user-defined functions to improve its structure and readability. Specifically, the program should do the following:

1.    Prompt the user for the coordinates of the first vector one at a time.

2.    Prompt the user for the coordinates of the second vector one at a time.

3.    Calculate the angle y in degrees; define and use a function gamma for this purpose. Gamma in turn should call a function dot_prod that calculates the dot product of two vectors and a function vector_mag that calculates the magnitude of a vector.

4.    Print the value of y to the screen.

5.    Prompt the user to enter ‘c’ to continue with another pair of vectors or ‘q’ to quit.

>>36
Meh, it's not so bad. I'm not too familiar with C, but it seems you just messed up a few declarations, forgot a couple of semicolons and forgot to pass some parameters to a function. These things happen all the time, that's what compiler error messages are for.

Get a C compiler, I'm sure there are plenty of free ones out there if you Google 'em. That will also allow you to test your program once you get out these kinks, giving you a warm fuzzy feeling when the test succeeds.

I'm sure there are plenty of free ones
GCC is all you'll ever need.

provide reward, receive program

Why are you learning programming with C? Use a better language to learn programming. I suggest one of:
- Python, the Abelson's choice for a flexible learning language
- Scheme, the Sussman's legendary language
- Logo, the Abelson's attractive and suave learner's language

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this is why we have python:

from math import acos
v1=input('vector1\n')
v2=input('vector2\n')
dot=reduce(lambda x,y:x+y,map(lambda x,y:x*y,v1,v2))
abs1=reduce(lambda x,y:x+y,map(lambda x:x**2,v1))**0.5
abs2=reduce(lambda x,y:x+y,map(lambda x:x**2,v2))**0.5

print (acos(dot/(abs1*abs2)))

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Expert programming site.

And you will be loved forever!
And you will be forgotten immediatly

>>45
ONE WORD, FORCED INDENTAITON FO THE CODE, THREAD OVER!!!!!!!!!!!!!!!!!!!!!!!

>>48
ONE WORD ,7 LINES, LOT LESS THAN C++

OP is fail for not be able to do it on his own

cout <<"this thread sucks";

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