Thread: Help PLease

I don't think he was asking us to do his work. I think he was asking us if the steps he wrote down are a good method for doing this.

Oh but we can yell at them for not giving a good thread title

I find your steps for calculating the std dev a bit hard to follow (just the Eglish reading of it), but it appears as if you have the right formula for it.

Your solution certainly sounds workable, though. If you know structures/classes, then this would be a good use of a data struct (the group relevant information so you only have one array).

Right this is what i have done so far any suggestions i am at a kinda standstill now where to go. any help would be very grateful

Code:

// Program to show use of  arrays
#include<iostream.h>
#include<iomanip.h>
#include<conio.h>
#include<ctype.h>
#include<string>

void input (void);
void calc (void);
void display (void);
void percent (void);

void vvv	(void);
int checknumb(char[7]);

string fname ;
string lname;
const int z = 1;
string wholename[z];

int results[z], variance[z] ;
int tot,total;
char * examn[z];
int arch[1];

float ave,ave1;
float perc[10] ;

int main(void)
{


    			input();

				percent();
    			calc();
    			display() ;

    				 cout<<" Please type in any key to finish"<< endl;
     			getch();

    			 return 0;
     							}



   void input (void)
   {

		for (int i = 0; i<z; i++)
   	{
         char studnumber[7];

         bool OK = false;

         while (!OK)
            {
    		   cout<<" Enter a student number"<<endl;
    		   cin>>studnumber;

   		   if (checknumb(studnumber))
               {
   		      cout<<"This number is valid" <<endl;
               examn[i]=studnumber;
               OK = true;
               }
   		   else
   		      cout<<" Unfortunately this number is invalid"<<endl;
            }

         		cout<<"Type in your first name	"<<endl;
         		cin>>fname;
         		cout<<"Type in your last name		"<<endl;
         		cin>>lname;
               wholename[i]= fname+" "+lname;
   				cout<<" Please type in result for programming "
        			 <<(i+1)<<endl;
     				 cin>>results[i];

      			cout<<" Please type in result for architecture "<<(i+1)<<endl;
      			cin>>arch[i];
      			tot+= results[i];
      			total+=arch[i];
      }// close for loop

     }   // close function

     int checknumb(char code[])
   	{

         // confirm string is right length
        if(strlen(code)!= 7)
         	return 0;

         //confirm string is all digits
         for (int i = 0; i<7;i++)
         	{
            	if (!isdigit(code[i]))
               return 0;
               }

         //return -1 if all is Ok
         return -1 ;
         }  // end checknumb


void percent(void)
					{
				for (int i=0;i<6;i++)
				{
   			perc[i]=results[i]/total*100;

				cout<<setiosflags(ios::showpoint|ios::fixed)
   			<<setprecision(2)<<perc[i]<<endl<<endl;
  						 }
 				}


    			void calc (void)
   			{
				ave = tot/z;
     			 ave1 =total/z;

     			for (int i = 0; i <z;i++)
     			{
      		variance[i] = results[i] - ave ;
        				 }

         		 }

     void display (void)

     {
     			  //	cout<<"First Name	+ Last Name	"<<wholename[z]<<endl;   */


      			cout<<"\n\nTotal of Programming	"<<tot<<endl;
      			cout<<"\n\nTotal of Arch	"<<total<<endl;
					cout<<"\nAverage of results of Programming	"<<setiosflags(ios::showpoint|ios::fixed)<<setprecision(2)<<ave<<endl;
     			   cout<<"\nAverage of results Of Arch	"<<setiosflags(ios::showpoint|ios::fixed)<<setprecision(2)<<ave1<<endl;
      			cout<< "\n\n Results	" << setw(20)<<"Variance"<<endl;

      for (int h = 0; h<z;h++)
   	{
      	cout<<results[h]<<setw(20)<<variance[h]<<endl;
         }

           }

//

Code:

// Program to show use of  arrays

Well you could work on your indentation skills - that last post was a mess.
Or configure your text editor to only use spaces for indentation - mixing spaces and tabs really sucks on a message board. Spaces mean everyone sees what you see, not what your super-clever editor manages to tidy up for you.