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Added a function to verify if a user exists in the user info file

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This commit is contained in:
Calson Noah 2017-05-16 16:25:36 +01:00
parent a3e9c2b7bf
commit a729d73732
1 changed files with 24 additions and 1 deletions
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23
functions_for_cmd_typist.h
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@ -402,3 +402,26 @@ void make_current(FILE* file_to_remove_from)
}
}
}
/*Ensures atleast one user account exist*/
extern void user_test(void)
{
FILE *fp;
if((fp=fopen("./speed/user_speed.info","r"))==NULL)
{
fprintf(stderr, "%s\n", "Fatal Error, Some files are missing");
exit(EXIT_FAILURE);
}
rewind(fp);
char ch=getc(fp);
if(ch==EOF)//checking if at the beginning of a character there is a charater, if not exist
{
fprintf(stderr, "%s\n", "No user exists yet, use <command mkuser \"username\"> to add new user");
exit(EXIT_FAILURE);
}
if(fclose(fp))
{
fprintf(stderr, "%s\n", "Unable to close lesson file");
exit(EXIT_FAILURE);
}
}