Hi everyone,
I'm trying to figure out how I can write information stored in a variable to a file (right now I have a text file, but that's probably not the best way to do it) and then be able to recall that information back to the variable after I load the file.
More specifically: I have a variable called "name" and when you run my program, it asks for your name and then stores it in a text file called profile. When you run the program again, it looks for the profile and then loads the characters from it. I want it to load those characters back into the variable "name" so that the program recognizes it as a variable.
The program writes the variables to the function at line 98 in the function newAccount()
Here is my code:
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
//declaring my functions
//legalAge() accepts 1 integer (age)
int legalAge (int age);
int returnProfile();
int readFileProfile();
//newAccount and checkForAccounts return nothing
void newAccount ();
void checkForAccounts ();
//defining global variables
int age;
char name[50];
//creates file called profile
FILE *profile;
int main()
{
printf("Welcome! We are going to check for a profile. \n");
printf("…\n");
//run checkForAccounts() first to…check for accounts
checkForAccounts();
legalAge(age);
return 0;
}
//these function names are pretty self-explanatory
void checkForAccounts()
{
char response[2];
//this part checks for an account
profile = fopen("./profile.txt","r");
if(!profile)
{
printf("No accounts found. Would you like to create an account? (y/n) \n");
fgets (response, 2, stdin);
fpurge (stdin);
//if the user replies "y", create a new account
//otherwise GTFO
if(strcasecmp(response,"y") == 0)
{
newAccount();
}
else
{
printf("Uhh…okay. \n");
exit(EXIT_SUCCESS);
}
}
else
{
readFileProfile();
printf("Would you like to run legalAge()?\n");
fgets (response, 2, stdin);
if(strcasecmp(response,"y") == 0)
{
legalAge(age);
}
else
{
printf("What would you like to do? \n");
}
}
}
void newAccount()
{
printf("Enter your name: \n");
fgets (name, 50, stdin);
fpurge (stdin);
printf("Enter your age: \n");
scanf("%d", &age);
fpurge( stdin);
//this creates the file or displays an error message if the file can't be created
profile = fopen("./profile.txt", "w+");
if (!profile)
{
printf("Error creating file.");
}
else
{
fprintf (profile, "%s", name);
fprintf (profile, "%d \n", age);
fclose (profile);
}
}
int returnProfile()
{
printf("Your profile says: \n");
printf("Name: %s", name);
printf("Age: %d \n", age);
}
int readFileProfile()
{
printf("Profile found! \n");
int c;
profile = fopen("./profile.txt","r");
c = getc(profile);
while (c!= EOF)
{
putchar(c);
c = getc(profile);
}
fclose(profile);
}
