Help with struct variable

Question

I made a struct like this:

typedef struct { 
 int color[3];
 int positions[4];
 char init[20];
 void (*fn)();
} buttons;

and a variable like this:

button test[1] = 
{
 {{0,0,0},{0,0,100,100},"getSomething",setSomething}
}

In loop() I call test[i].color, test[i].position normally.

Problems start when I want to execute a function.

I made two attemps, one with string and one with a function statement. With the string I have no problems using a strcmp() but it's not what I want.

I need to know how I can store 2 different functions in the struct and how I can execute.

Thanks in advance!

• Mark Smith: Could you post what you've tried, please, and in what way it didn't work?
• onlygio: Jot answers is what I needed!
• Code Gorilla: What mark was saying is if you post more code people may be able to understand what you are trying to say better and help you faster. I thought you wanted to store two function pointer in the one struct by what your text says.

Answer 1

The typedef is no longer needed, using the 'struct' with a name declares the type.

// Arduino Uno
struct buttons
{ 
 int color[3];
 int positions[4];
 char init[20];
 void (*fn)();
};
// Declare the functions here, or use prototyping
void func1();
void func2();
buttons test[] = 
{
 { {0,0,0}, {0,0,100,100}, "getSomething", func1 },
 { {40,40,40}, {50,50,10,10}, "somethingElse", func2 },
};
void setup()
{
 Serial.begin(9600);
 Serial.println("Calling the functions:");
 test[0].fn();
 test[1].fn();
}
void loop()
{
}
void func1()
{
 Serial.println("func1");
}
void func2()
{
 Serial.println("func2");
}

• Peter Mortensen: Not needed because what? Because it is C++?