problems with opening files and pointers...

hey!
i'm starting to learn c programming language and i'm having a lot of trouble with analising a file and read its characters and then copy them to another file... also i have a lot of problems with pointers and arrays... here's my code and remember n00b alert!! :)

Code:

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

char incluir[]={'#','i','n','c','l','u','i','r',' ','\"'};
char definir[]={'#','d','e','f','i','n','i','r',' '};
char esquecer[]={'#','e','s','q','u','e','c','e','r',' '};

void fazincluir(linha){
  int i=9;
  int j=0;
  int caracteracopiar;
  char nomedofile[1024];
  while (&linha[i] != '\"'){
    nomedofile[j]=linha [i];}
  nomedofile[j]='\0';
  fopen(nomedofile, "r");
  while((caracteracopiar=fgetc(atoi(nomedofile))) != EOF)
    fputc(caracteracopiar, ficheiroderesultado);
}


void analisa(FILE* ficheiro){
  char* linha=(char*) malloc(sizeof(char)*1024);
  while((fgets(linha, pre)) != EOF){
    if ((strncmp(incluir, linha, 9)) > 0)
      fazincluir(linha);
    else if ((strncmp(esquecer, linha, 10)) > 0)
      fazesquecer(linha);
    else if ((strncmp(definir, linha, 9)) > 0)
      fazdefinir(linha);
  }
}

int main(int argc, char* argv[]){
  FILE* pre;
  pre=fopen (argv[1], "r");
  if(pre == NULL)
    printf("Erro: Impossivel abrir ficheiro\n");
  else analisa(pre);
  return 0;
}

---

i get the following compilation errors:

Code:

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proj2-1.c: In function `fazincluir':
proj2-1.c:14: subscripted value is neither array nor pointer
proj2-1.c:15: subscripted value is neither array nor pointer
proj2-1.c:18: warning: passing arg 1 of `fgetc' makes pointer from integer without a cast
proj2-1.c:19: `ficheiroderesultado' undeclared (first use in this function)
proj2-1.c:19: (Each undeclared identifier is reported only once
proj2-1.c:19: for each function it appears in.)
proj2-1.c: In function `analisa':
proj2-1.c:25: `pre' undeclared (first use in this function)
proj2-1.c:25: too few arguments to function `fgets'
proj2-1.c:25: warning: comparison between pointer and integer
proj2-1.c:29: warning: implicit declaration of function `fazesquecer'
proj2-1.c:31: warning: implicit declaration of function `fazdefinir'

---

PS: nevermind the implicit declarations, the program is not done yet.

You really should get a good book on C, because from your code it's obvious you have no idea how to use most standard functions, the differences in type and scope, and various other features of C:

Code:

---

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

char incluir[]={'#','i','n','c','l','u','i','r',' ','\"'};
char definir[]={'#','d','e','f','i','n','i','r',' '};
char esquecer[]={'#','e','s','q','u','e','c','e','r',' '};

extern FILE *ficheiroderesultado;
FILE* pre;

void fazincluir(char *linha){
  int i=9;
  int j=0;
  int caracteracopiar;
  char nomedofile[1024];
  FILE *file;
  while (linha[i] != '\"'){
    nomedofile[j]=linha [i];}
  nomedofile[j]='\0';
  file=fopen(nomedofile, "r");
  while((caracteracopiar=fgetc(file)) != EOF)
    fputc(caracteracopiar, ficheiroderesultado);
}


void analisa(FILE* ficheiro){
  char* linha=(char*) malloc(sizeof(char)*1024);
  while((fgets(linha, 1024, pre)) != NULL){
    if ((strncmp(incluir, linha, 9)) > 0)
      fazincluir(linha);
    else if ((strncmp(esquecer, linha, 10)) > 0)
      fazesquecer(linha);
    else if ((strncmp(definir, linha, 9)) > 0)
      fazdefinir(linha);
  }
}

int main(int argc, char* argv[]){
  pre=fopen (argv[1], "r");
  if(pre == NULL)
    printf("Erro: Impossivel abrir ficheiro\n");
  else analisa(pre);
  return 0;
}

---

> char incluir[]={'#','i','n','c','l','u','i','r',' ','\"'};
The easy way
char incluir[]= "#incluir \"";

well i have two books, c programming language by rithchie and one in portuguese... guess i gotta read them better before i come here asking these type of questions... :o
but thanks for the help you guys! you rule!!!!

}
}

int main(int argc, char* argv[]){
FILE* pre;
pre=fopen (argv[1], "r");
if(pre == NULL)
printf("Erro: Impossivel abrir ficheiro\n");
else analisa(pre);
return 0;
}
dans cette partie du code il a une erreur fatale
c'est de fermer '}' sans aucune precedent
et encore fermer une autre sans ouvrir '{' au debut du programme main
===> fait attention il faut utilser la bibliotheque <fstrem.h> pour la gestion des fichier
....good luck

Quote:

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Originally Posted by enjoy

}
}

int main(int argc, char* argv[]){
FILE* pre;
pre=fopen (argv[1], "r");
if(pre == NULL)
printf("Erro: Impossivel abrir ficheiro\n");
else analisa(pre);
return 0;
}
dans cette partie du code il a une erreur fatale
c'est de fermer '}' sans aucune precedent
et encore fermer une autre sans ouvrir '{' au debut du programme main
===> fait attention il faut utilser la bibliotheque <fstrem.h> pour la gestion des fichier
....good luck

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There isn't anything wrong with the bracing, and fstream is C++. This is the C forum.