Help me with this C problem

Replies

• 

  sumitjami

  What I think is that u are trying to directly write an integer value in the form of char to a file now suppose the int variable contains a value greater than 256 than in what kind of char would that int value be converted into..............so to directly convert the int value u should use the function "itoa()" to convert the value from in to a String and then insert that string into the file and your problem will be resolved TRY THIS OUT 😁
  ******************************************************************
  
• 

  pavlejovanov

  First thanks for helping me. I try this but I don't know how to use the function itoa(). I try this:
  
  char buffer[50],c;
  c=itoa( mnozenje, buffer,10);
  fputc ( c, weights ) ;
  
  I google this but it doesn't works. I don't know what is buffer and how works itoa() function??? If you have ever use, or somebody else, please try something and write me how I can solve my problem.😕
  I find an example where variable c is string, but in C language I can't use the type string.
• 

  pavlejovanov

  OK I solve this problem... If somebody have problem like this the solution is:
  
  char buffer[50],*c;
  c=itoa( mnozenje, buffer,10);
  fputs ( c, weights ) ;
  
  So the problem was I must use fputs not fputc and c must be a pointer.
• 

  sumitjami

  did u understand what u did............actually in the function itoa() the number which was passed in "mnozenje" was converted to a string this function returned a pointer to that string and later that string was written to the designated file using the function fputc()
• 

  aaseem.sufi

  try fprintf(weights,"%d",mnozenje);
  
  
  
  

  pavlejovanov

  Please help me somebody how to put integer into file. In variable 'mnozenje' I have the right numbers but in the file 'Weights.txt' I have this ĂĂĂȂāāĀ.With printf("%d",mnozenje); in the console the numbers are correct. I will copy all my code:
  
  

  #include "stdafx.h"
  #include "stdio.h"
  #include "stdlib.h"
  
  int _tmain(int argc, _TCHAR* argv[])
  {
          FILE *train, *weights,*test ;
          char ch ;
  
          train = fopen ( "Train.txt", "r" ) ;
          if ( train == NULL )
          {
                 puts ( "Cannot open source file" ) ;
                 return 0 ;
          }
  
          test = fopen ( "Test.txt", "r" ) ;
          if ( test == NULL )
          {
                 puts ( "Cannot open source file" ) ;
                 return 0 ;
          }
  
          weights = fopen ( "Weights.txt", "w" ) ;
          if ( weights == NULL )
          {
                 puts ( "Cannot open target file" ) ;
                 fclose ( weights ) ;
                 return 0 ;
          }
          int i=0,vektori=0,nevroni=0;
          while ( i<=3 )
          {
                  i++;
                  ch = fgetc ( train ) ;
  
                  if ( ch == EOF )
                         break ;
                  else
                  {
                      if(i==1)
                          vektori=atoi(&ch);
                      if(i==3)
                          nevroni=atoi(&ch);
                  }
          }
          int x=1,y=1,a[100][100],w[100][100];
          char c;
          while(1)
          {
              ch = fgetc ( train ) ;
  
              if ( ch == EOF )
                  break ;
  
                  if(ch!=10)
                  {
                      a[x][y]=atoi(&ch);
                      if(y==nevroni)
                      {
                          x++;
                          y=0;
                      }
                      y++;
                  }
  
          }
  
          int pomos=1,mnozenje=0,s;
          for(int k=1;k<=nevroni;k++)
          {
              for(int l=1;l<=nevroni;l++)
              {
                  if(k!=l)
                  {
                      while(pomos<=vektori)
                      {
                          mnozenje+=a[pomos][k]*a[pomos][l];
                          pomos++;
                      }
                      printf("%d",mnozenje);
                      w[k][l]=mnozenje;
                      c=(char)mnozenje;
  ________________________________________________________________
                      fputc ( mnozenje, weights )  ;//here is the problem
  ________________________________________________________________
                      mnozenje=0;
                      pomos=1;
                  }
              }
          }
          fclose (train) ;
          fclose (weights);
          fclose (test);
                      scanf("%d",s);
      return 0;
  }