Thread: help programing in c

Oh, I'm not going to be doing it for you. I think that you'll find my prices unreasonably expensive :P

I just can't understand how it was ever expected to compile. So many errors!


I'd suggest scrapping the code and starting again, and then building the code back up incrementally - It won't take that long, but it will be a better foundation

Step 1 - Open file, print first line and close.
Step 2 - print the whole file

Seporately...
Step 3 - make a function that can calculate the mean value from preset array.
Step 4 - make a function that can calculate the median value from preset array.

Step 5 - put mean function in the original code and pass values from the file to it and print it out
Step 6 - put median function in the original code and pass values from the file to it and print it out

Cross post
Board Message

I have to do in the code from the numbers of txt me of the result of the calculation of the formulas of the mean and the median. I have many mistakes can you help me please.

Code:

#include <stdio.h>
#include <conio.h>
#include <string.h>


main
{


 FILE *fp1,*fp2;
    int i;
    float A[4];
        fp1 = fopen("datos.txt", "r");   //Abrimos  el archivo


        for(i=0;i<4;i++)                 //Iteramos i para  ir almacenando los valores.
        {
        fscanf(fp1, "%f", &A[i]);        // Leemos un float y lo guardamos en A en la posicion i


        printf("Media [% d]: %.2f \n",i, A[i]);
        }


{
printf("ponga el numero y despues enter");
int  x[100],n,i ;
float  mean (int,int []);
float  mediana (int,int []);


scanf ("%d",&n);
for (i=0;i<n;i++)
    scanf("%d",&x [i]);
printf ("media=%f\n ",mean(n,x));
printf ("mediana=%f\n",mediana (n,x));
getch ();


}






float  mean (int m,int a [])  {
    int  sum= 0,i;
    for (i=0;i<m;i++ )
        sum+=a[i];
    return ((float)sum/m );
}




float  mediana ( int n, int x [])  {
    float  temp ;
    int i,j;
    for ( i=0;  i<n-1;i ++ )  {
        for (j=i+1;j<n;j++)  {
            if (x[j]<x[i])  {
                temp=x[i];
                x [i]=x[j];
                x [j]= temp ;
            }
        }
    }


    if (n%2==0)  {
        return((x[n/2]+x[n/2-1])/2.0);
    }
    else
     {


        return x[n/2];


     }
    }
 fclose(fp1);
}

Originally Posted by Jairofr

Friend is not a matrix is ​​to calculate the average and the median still does not come out help me

I didn't say anything about a matrix - My advice was to start again and rebuild it in small steps.

You didn't seem to respond in a way to suggest that you wanted to do that, so I stopped helping.


PS - I don't think that flooding the board with the same question is going to go down well...

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