Problem with Arduino using arrays in Structure

Question

With an Arduino Uno I'm having a problem that is probably simple to solve for somebody who knows what they're doing. I'm trying to get this code to print out "-30" but all I get is "0" no matter what value I put in "setpt[x]" in the serial.print line in loop().

Thanks in advance, Don

typedef struct
{
  byte seg_num[12];
  byte ramp_hrs[12];
  int  setpt[12];
  byte ramp_mins[12];
}record_type;

record_type profile[8];

void setup()
{
  Serial.begin(9600);
  Serial.println("*** START ***");
}

void loop()
{
  profile[0] = (record_type) {(1,2,3),(5,7,9),(-40,-30,-25),(2,4,6)};
  
  Serial.println(profile[0].setpt[2]); // fails with setpt[from 0 to 3]

}

Answer 1

Comma operators are used in your expressions like (1,2,3).

(1,2,3) is equivalent to 3 here.

You should use {} instead of () to initialize each arrays.

profile[0] = (record_type) {{1,2,3},{5,7,9},{-40,-30,-25},{2,4,6}};

Then, correct the index to get -30 instead of -25.

Serial.println(profile[0].setpt[1]);