Searching for a String within a file

[TidusBlue]

I'm making a program that stores peoples info in a file. Each Person's info is a New line ex:

John <info>
doug <info>

I need to be able to search for the person's name to pull the info from the file into a struct. I'm not quite sure how to compare the strings. here's a snipit of the code:

FILE * input_file;

struct
{
char name[20];
int age; // theirs more, but not important.
} Info_Struct;

int main(void)
{
char name[20];
char file_name[20];

printf("What is your name: ");
scanf("%s",name);

input_file = fopen("d:\\test.dat","r");

fscanf("%s",file_name);

//here's where I need to compare the names to see if the
//first name in the file is correct, or if I need to go to the
// nest line. I'd like to use an if statement, but if theirs
//something better, I think I could live.

}


I'm using DevC++

[Prelude]

You'll want something along the lines of this:

int main ( void )
{
  char name[80], buffer[80];
  FILE *IN = fopen ( "filename" );
  if ( IN != NULL ) {
    printf ( "Enter your name: " );
    fgets ( name, sizeof name, stdin );
    while ( fscanf ( in, "%s", buffer ) != EOF ) {
      if ( strcmp ( buffer, name ) == 0 )
        /* Put it in the struct */
    }
  }
  else
    printf ( "Error opening file!" );
  return EXIT_SUCCESS;
}

-Prelude

[TidusBlue]

This is the code I put in, but it's just putting garbage in the variables....


Characters_Struct Player;

char name[20],buffer[20];

Character_File = fopen("d:\\character.dat","r+");

if (Character_File != NULL)
{
printf("Enter your name: ");
fgets (name, sizeof name, stdin);
while (fscanf(Character_File,"%s",&buffer) != EOF)
{
if (strcmp(buffer,name) == 0)
{
fscanf(Character_File,"%s", &Player.name);
fscanf(Character_File,"%d", &Player.weapon);
fscanf(Character_File,"%d", &Player.armor);
fscanf(Character_File,"%d", &Player.strength);
fscanf(Character_File,"%d", &Player.def);
fscanf(Character_File,"%d", &Player.gold);
fscanf(Character_File,"%d", &Player.level);
fscanf(Character_File,"%d", &Player.health);
fscanf(Character_File,"%d", &Player.max_health);
}
}
}
else
printf ("Error opening file");

[-KEN-]

use fread() for reading structs from the disk.

[swoopy]

>fgets (name, sizeof name, stdin);

add this after the fgets().

name[strlen(name)-1] = NULL;

You need to remove the newline character before the comparison (or you could use strncmp() instead of strcmp().

[TidusBlue]

I got it to work by using fscanf instead of fgets....