program of writes a table of squares and square roots to the file myfiledat. Starts the table from number 1 to 10. i encounter a error. May i know where i my error?

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C#

#include<stdio.h>
#include<math.h>
int main(void)
{
   FILE*fmyfile;
   float a;
   float sq;
   float sqr;

   fmyfile = fopen("myfile.dat","w");
   if(fmyfile == NULL)
   {
    printf("failed to open datafile");
    exit (0);
   }
   else
   {
    printf("%7s%8s%15s\n","number","squares","square roots");
    for(a = 1; a <= 10; a++)
    {
    printf("%7.0f%8.2f%15.2f\n",a,pow(a,2),sqrt(a));
    fprintf(fmyfile,"%f",a);
    fprintf(fmyfile,"%f",pow(a,2));
    fprintf(fmyfile,"%f",sqrt(a));
    }

   }
fclose(fmyfile);
}

this is my program of writes a table of squares and square roots to the file myfiledat. Starts the table from number 1 to 10. i encounter a error. May i know where i my error?

Posted 3-May-11 7:23am

Jayfam

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Manfred Rudolf Bihy 3-May-11 13:31pm

What is the error you are hitting?

Jayfam 3-May-11 13:33pm

problem solve..no error already...thanx

Manfred Rudolf Bihy 3-May-11 13:48pm

Great that you could work it out!

Jayfam 3-May-11 13:49pm

thank you

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Manfred Rudolf Bihy · Accepted Answer · 2011-05-03T07:35:00

Would this work:

C#

#include<stdio.h>
#include<math.h>
int main(void)
{
    FILE*fmyfile;
    float a;
    float sq;
    float sqr;

    fmyfile = fopen("myfile.dat","w");
    if(fmyfile == NULL)
    {
        printf("failed to open datafile");
        exit (0);
    }
    else
    {
        printf("%7s%8s%15s\n","number","squares","square roots");
        for(int idx = 1; idx <= 10; idx++)
        {
            a  = 1.0f * idx;
            sq = pow(a,2);
            sqr= sqrt(a);  
            printf("%7.0f%8.2f%15.2f\n",a,sq,sqr);
            fprintf(fmyfile,"%f",a);
            fprintf(fmyfile,"%f",sq);
            fprintf(fmyfile,"%f",sqr);
        }
    }
    fclose(fmyfile);
}

Does this do the trick?

Regards,

-MRB