Arduino EEPROM Save Wifi Informaitons

#include "EEPROM.h";
// This code is used for save wifi name and password.

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.print("deneme");

int a=21;
int b1 =1;
char str[]= "wifi_adi|wifi_sifresi";
int c;

EEPROM.write(0,a);
Serial.print("Kayit basarili");


  c=EEPROM.read(0);
  Serial.print(c);
  for(int i = 1; i < a+1; i++){
  EEPROM.write(i,str[i-1]);
    //theBuffer[i] = EEPROM.read(i);
  Serial.print(str[i-1]);
  }
  for(int i = 1; i<c+1;i++){
    char okunan = EEPROM.read(i);
    Serial.print(okunan);
  }
  
}

void loop() {
  // put your main code here, to run repeatedly:

}