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Codice: Seleziona tutto

 ssize_t getline(char **lineptr, size_t *n, FILE *stream);

Codice: Seleziona tutto

char *my_string;
	int y;
	int bytes=100;
	
	/////////////////////////////////////////// LETTURA DA FILE ////////////////////////////////////////////////////

	if((fd_in=open("file1.txt",O_RDONLY,0644))==-1){
		write(2,"OPEN: -1",sizeof(char)*8);
		//syserr("mycat", "Cannot open file.");
	}
	if((y=getline(&my_string,&bytes,fd_in))==-1){
		printf("errore");
		exit(1);
	}
	puts(my_string);

Codice: Seleziona tutto

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

int main(int argc, char const *argv[])
{
   char *my_string = NULL;
   int y;
   int bytes=100;
   FILE * fd_in;
   
   if((fd_in=fopen("test.txt","r")) == NULL){
      fprintf(stderr,"FOPEN: Null Value\n");
      /* syserr("mycat", "Cannot open file."); */
   }
   my_string = (char *)malloc((bytes+1));
   if((y=getline(&my_string, (size_t *)&bytes,fd_in))==-1){
      fprintf(stderr,"GETLINE: Failure to read line\n");
      exit(1);
   }
   puts(my_string);
   /* code */
   return 0;
}