Desperate !! Stuck on a simple C task...

[yojimbo2005]

hey all, as part of my computing module i have been asked to create a program that will promp the user for the following:

depth_beam /* i.e fprintf etc "enter value of beam" then fscanf %lf depth_beam*/
breadth_beam
min_moment
max_moment
number_incremen ts /*between minimum and maximum moments*/

then calculate bending stress using a loop controlled by relevant input data ^ and should store values of moment maximum and minimum stress in a linked list.



after completing calculations it is to write the values from the linked list to the screen as a table:

depth of beam:
breadth of beam:
minimum applied moment:
maximum applied moment
number of increments.

as a guide iv included the program that i used on the previous question which was to calculate max and min tensile stresses:

#include <stdio.h>
int main(void)

{
double tensile_min;
double tensile_max;
double bending_moment;
double moment_area;
double depth_beam;
double breadth_beam;

fprintf(stdout, "Enter the magnitude of the Applied Bending Moment (Nm):");
fscanf(stdin, "%lf", &bending_moment );
fprintf(stdout, "Enter the Breadth of the beam (m):");
fscanf(stdin, "%lf", &breadth_bea m);
fprintf(stdout, "Enter the Depth of the beam (m):");
fscanf(stdin, "%lf", &depth_beam) ;

moment_area = (breadth_beam * depth_beam * depth_beam * depth_beam) / 12;
tensile_min = ((0-bending_moment) * depth_beam) / (moment_area*2) ;
tensile_max = (bending_moment * depth_beam) / (moment_area * 2);

fprintf(stdout, "\n\nThe Second Moment of Area for this particular beam is: %.2lf m4\n", moment_area);
fprintf(stdout, "With a Minimun Tensile Stress of %.3lf N/m2\n", tensile_min);
fprintf(stdout, "And a Maximum Tensile Stress of %.3lf N/m2\n", tensile_max);

return(0);
}

cheers in advance, any help would be greatly apreciated, i have got a really unhelpful tutor who wont explain beyond his set of notes (which are extremely poor and unthought-out

James

[horace1]

implement the program in sections, e.g. start by

Read minimum moment
Read maximum moment
read  number of incremenets
moment=minimum moment
increment =  
while (moment < = maximum moment)
    use existing code to calculate the min and max stress
    moment = moment + increment
 

when that is working put the results in a linked list - do you have to write you own or can you use the STL, e.g.
http://www.cppreferenc e.com/cpplist/index.html

[yojimbo2005]

You can write your own. Im not sure i understand your porgram, what exactly do u mean in sections. i really dont understand this. I have tried doing it step by step, but to no avail...

[yojimbo2005]

Hi, cheers taking time to help me out.

i need to make a linked list that stores all the values of stress, calculated for each value of applied moment, incorporating the number of increments...

so lets say minimum stress works out to be 100 Nm and max is 500 Nm and your number of increments is 5 then you'd need to store values for 100, 200, 300, 400, and 500 Nm

so, im going to have to define number_incremen ts, as well as the others on my first program, any suggestions

[Kudzanayi]

I want the basics on how to start my own c programme

[yojimbo2005]

hey guys, really apreciate the help been brought forward and all but im still finding it difficult to take on board the advice given, would it be possible to make an example program of how you would tackle the question so i can see whats been done and how it works or if not just code the loop and the linked list and then word the basics, cheers in advance