char Str1[15];
char Str2[8] = {'a', 'r', 'd', 'u', 'i', 'n', 'o'};
char Str3[8] = {'a', 'r', 'd', 'u', 'i', 'n', 'o', '\0'};
char Str4[] = "arduino";
char Str5[8] = "arduino";
char Str6[15] =  "arduino";
char Str7[30] = "Politeknik Pajajaran";

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);

  Str1[0] = 'A';
  Str1[1] = 'r';
  Str1[2] = 'd';
  Str1[3] = 'u';
  Str1[4] = 'i';
  Str1[5] = 'n';
  Str1[6] = 'o';

  Serial.print("Str1 = ");Serial.println(Str1);
  Serial.print("Str2 = ");Serial.println(Str2);
  Serial.print("Str3 = ");Serial.println(Str3);
  Serial.print("Str4 = ");Serial.println(Str4);
  Serial.print("Str5 = ");Serial.println(Str5);
  Serial.print("Str6 = ");Serial.println(Str6);
  Serial.print("Str7 = ");Serial.println(Str7);

}

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

}