I cannot underestand this error, some help will be nice

[thin wharf]

#include <stdio.h>

int user_login (FILE * users_db);
int user_register (FILE * users_db);

int main (){

  FILE *users_db, *db_r, *db_w;
  int login, db_mode, register;
  char db_mode_set, error_output[255],error_mode[15];

  printf ("DATABASE\n");
  printf ("mode == ");
  scanf ("%d", &db_mode);

    if (db_mode == 2){
        login = user_login (users_db);
        if (login == 1){
            printf ("\nREAD (R) / WRITE (W)");
            scanf (" %c", &db_mode_set);
            while (db_mode_set != 'W' || db_mode_set != 'w'|| db_mode_set != 'R' || db_mode_set != 'r'|| db_mode_set != 'S' || db_mode_set != 's'){
                if (db_mode_set == 'S' || db_mode_set == 's'){printf ("\ncommand stop ejecuted. db stopped. ");return 0;}
                printf ("Select a valid mode for operating the db: ");
                scanf (" %c", &db_mode_set);
            }
            if(db_mode_set == 'W' || db_mode_set == 'w'){
        db_r = fopen ("db.txt", "r");
        db_w = fopen ("db.txt", "w");
        }
        if (db_mode_set == 'R' || db_mode_set == 'r'){db_r = fopen ("db.txt", "r");}
        }
        if(login == 2){printf ("error-001");return 0;}
        if(login == 3){printf ("error-002");return 0;}
        if(login == 6){printf ("error-006");return 0;}
        if(login == 10){printf("fatal error-100.\n Talk with programmer");return 0;}
      }
      if(db_mode==3) {
          register = user_register(users_db);
          
      }
}

[slow veldt]

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[thin wharf]

main.c: In function ‘main’:
main.c:9:23: error: expected identifier or ‘(’ before ‘register’
    9 |   int login, db_mode, register;
      |                       ^~~~~~~~
main.c:38:21: error: expected identifier or ‘(’ before ‘=’ token
   38 |             register=user_register(users_db);
      | 

Line 9

line 38

[merry warren]

register is a keyword in C iirc

maybe thats why

[thin wharf]

iirc? You mean that have a fuction in the code?

like c language

[merry warren]

iirc = if i remember correctly

[merry warren]

just in the C language

[thin wharf]

Okay, i will try something new

Okay

Wow

changed and solved

Thanks buddy

[merry warren]

Np <33