How to select array data as conditional statement

int irValue = 1;

void loop() {

if (irValue==1) {

int array_data[3] = { 1,2,3 };

} else {

int array_data[3] = { 4,5,6 };

}

Serial.println(array_data[2]);

delay(10000);

}

‘array_1’ was not declared in this scope

it’s not work.
I want to select the value of array_1 according to irValue.
What should i do?

Hello
show you complete sketch to be forwarded in code tags </> to see to help you.

you can use preprocessor commands

#if 1
int array_data[3] = { 1,2,3 };
#else
int array_data[3] = { 4,5,6 };
#endif

Does

int array_data1[3] = {1,2,3};
int array_data2[3] = {4,5,6};
int* array_data = (irValue==1) ? array_data1 : array_data2;

work?

static initialization, outside of a function call, occurs at compile time. the approaches you’re suggesting occur at run-time.

why don’t you just ask the compiler and try it?