#C++ Assignment

130 messages · Page 1 of 1 (latest)

grave plaza
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I am not sure where to go from here, im new at coding and trying to get the basics down

code1.PNG code2.PNG code3.PNG code4.PNG
hard wasp
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!f

twin roverBOT
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#include <iostream>

using namespace std;

int main() {
  // declare variables
  int num1, num2, num3, average

  // executable statements

  // return 0;
}
Munsterkitteh
Formatted by Zelis
hard wasp
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@grave plaza Do you know how to set variables?

maiden comet
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ah wait it does on one of the images

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but yeah a musterkitteh what exactly are you stuck on?

grave plaza
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I dont know what to type after declaring my variables

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im trying to

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Write C++ statements that store 125 into num1, 28 into num2, and –25 into num3.

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Like so im trying to store the numbers in the system

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and I forgot how to do that

maiden comet
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right, then one step at the time

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lets begin with storing 125 in num1.

twin roverBOT
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How to Learn C++ Programming

Everyone learns differently, but the best way is to learn by doing:
Working on personal projects, solving programming challenges, etc.
Here are some resources to accompany you:

C++ Tutorials
Practice
Books

stackoverflow The Definitive C++ Book Guide and List

See Also
grave plaza
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So I would write

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num1 = 125

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?

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or do i have to write int num1;

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before that

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So, I have this now

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How do i format this right

twin roverBOT
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```cpp
int main() {
return 0;
}
```

maiden comet
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!f

twin roverBOT
# 
#include <iostream>

using namespace std;

int main() {
  // declare variables
  int num1, num2, num3,
      average

          num1 = 125 num2 = 28 num3 = -25

  // executable statements

  // return 0;
}
Munsterkitteh
Formatted by mcmlevi
maiden comet
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also keep in mind in C++ things are terminated with a ; after statements

grave plaza
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What statement would I put the ; after

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Ok well first what are statements

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and the next thing its asking is

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Write a C++ statement that stores the average of num1, num2, and num3 into average.

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so would I write num1, num2, num3 = average?

maiden comet
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well ; marks the end of the statement

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in the example I send on how to initialize variables there is a good few examples on where to put the semicolons as well

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but honestly if this kind of stuff is unclear I might surgest a different learning source 😅

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this is like bare bare basics of C++ that any tutorial should convey well

grave plaza
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yes i know Im reading through the link you sent me its my first week in this class im taking for computer programming and were just now touching on basics of coding

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we had learned input/output devices, secondary storage cpu, mm, ram , etc

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we havent really touched on variables etc

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just this week we have and all she did was make a video on a few programming examples but Im still trying to get grip on it

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How do I store the average of num1, num2, num3 into average

maiden comet
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well how is an average normally calculated?

grave plaza
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add 3 numbers up / by 3

maiden comet
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bingo

grave plaza
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How do i write that

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into a code

maiden comet
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well how would you write it in a math function?

grave plaza
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125+28+-25

maiden comet
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right

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and to average it?

grave plaza
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divide the number i gte by 3

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get*

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which is 42.6666667

maiden comet
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right so now time to translate it into code

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it's very similar to what you would do normally

grave plaza
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ok so

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!f

twin roverBOT
grave plaza
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!f

twin roverBOT
# 
#include <iostream>

using namespace std;

int main() {
  // declare variables
  int num1, num2, num3, average;

  num1 = 125;
  num2 = 28;
  num3 = -25;

  return 0;
}
Munsterkitteh
grave plaza
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I would do it after

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that yes

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the num3

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Would I start it by

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average =

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average = 125+28+-25 / 3

maiden comet
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yeah but you would not write the 125 and 28 etc

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you would use the variables you made

grave plaza
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num1, num2, num3?

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average = num1 + num2 + num3 / 3;

maiden comet
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yeah

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hower just like math, order of operation and order is a thing

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/ 3 is going to devide only num3 by 3

grave plaza
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so it would need to be

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backwards?

maiden comet
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nope

grave plaza
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Assign /3 to each variable

maiden comet
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/ has a higher priority then +

maiden comet
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how would you do this in regular math? ensure lower priority operaions get done first

grave plaza
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pemdas

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Im not that great at math

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I am thinking though

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well ok i thought that I add all the numbers up

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then divide that number by 3

maiden comet
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that could work yeah

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you can also simply wrap them addition in ()

grave plaza
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thats why I wrote my code

maiden comet
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so (num1 + num2 + num3) / 3

grave plaza
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OOOOO

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So group them together

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So its like when you

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have

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3(3+6)=

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u like mulitply the 3 by 3

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and 3 by 6

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orrrr am i wrong lol

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like the outside to the inside

maiden comet
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well yeah thats a thing but a simpler thing in this case with c++ is just doing the things in the () first and then the thing outside

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so it becomes 3 x 9

grave plaza
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ok im lost

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again

maiden comet
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3 * (3+6) --> 3 * (9) --> 27

grave plaza
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oh

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ok

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Ok i have this

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but its saying the error on the right

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Write C++ statement(s) that output the values of num1, num2, num3, and average.

maiden comet
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it's a warning not an error

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it's saying average is never used what it isn't

grave plaza
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okay

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How do i fix this

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why is it warning me

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also thank you for helping me

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i really appreciate it

maiden comet
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well the next step is propably actually using it

grave plaza
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So i need to output the values

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cout?

maiden comet
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yup

grave plaza
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cout << "num 1 =" << num1 endl;

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oops

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cout << "num 1 =" << num1 << endl;

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and so fourth with the other num and then average

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ayyyyy I did it

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!f

twin roverBOT
# 
#include <iostream>

using namespace std;

int main() {
  // declare variables
  int num1, num2, num3, average;

  num1 = 125;
  num2 = 28;
  num3 = -25;

  average = (num1 + num2 + num3) / 3;

  cout << "num 1 =" << num1 << endl;
  cout << "num 2 =" << num2 << endl;
  cout << "num 3 =" << num3 << endl;
  cout << "average =" << average << endl;

  return 0;
}
Munsterkitteh
grave plaza
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just needed some basic math help and some clarity on vocab lol

grave plaza
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!solved