#include <iostream>
using namespace std;

int main() 
{
    cout << "Hello, World!";
    return 0;
}Arduino: 1.8.18 (Windows 10), Плата:"Arduino Nano, ATmega328P"

sketch_mar14b:235:32: error: 'CRGB' has not been declared

 void set_step_color(uint8_t n, CRGB c)

                                ^~~~

sketch_mar14b:242:1: error: 'CRGB' does not name a type; did you mean 'OCR0B'?

 CRGB remapColor(CRGB c, uint8_t br)

 ^~~~

 OCR0B

sketch_mar14b:247:30: error: 'CRGB' has not been declared

 bool fire_on_step(uint8_t n, CRGB c)

                              ^~~~

sketch_mar14b:255:31: error: 'CRGB' has not been declared

 bool fire_off_step(uint8_t n, CRGB c)

                               ^~~~

sketch_mar14b:360:37: error: 'CRGB' has not been declared

 void set_duty_step_color(uint8_t n, CRGB c)

                                     ^~~~

sketch_mar14b:369:35: error: 'CRGB' has not been declared

 bool duty_fire_on_step(uint8_t n, CRGB c)

                                   ^~~~

sketch_mar14b:377:36: error: 'BRGB' has not been declared

 bool duty_fire_off_step(uint8_t n, BRGB c)

                                    ^~~~

In file included from C:\Users\Home\Documents\Arduino\sketch_mar14b\sketch_mar14b.ino:29:0:

C:\Program Files (x86)\arduino-1.8.18\libraries\FastLED-3.2.9/FastLED.h:14:21: note: #pragma message: FastLED version 3.002.009

 #    pragma message "FastLED version 3.002.009"

                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~

C:\Users\Home\Documents\Arduino\sketch_mar14b\sketch_mar14b.ino: In function 'void setup()':

sketch_mar14b:97:6: error: redefinition of 'void setup()'

 void setup() {

      ^~~~~

C:\Users\Home\Documents\Arduino\sketch_mar14b\sketch_mar14b.ino:1:6: note: 'void setup()' previously defined here

 void setup() {

      ^~~~~

C:\Users\Home\Documents\Arduino\sketch_mar14b\sketch_mar14b.ino: In function 'void loop()':

sketch_mar14b:113:6: error: redefinition of 'void loop()'

 void loop() {

      ^~~~

C:\Users\Home\Documents\Arduino\sketch_mar14b\sketch_mar14b.ino:6:6: note: 'void loop()' previously defined here

 void loop() {

      ^~~~

C:\Users\Home\Documents\Arduino\sketch_mar14b\sketch_mar14b.ino: At global scope:

sketch_mar14b:377:36: error: 'BRGB' has not been declared

 bool duty_fire_off_step(uint8_t n, BRGB c)

                                    ^~~~

exit status 1

'CRGB' has not been declared



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About C++

C++ is a widely used middle-level programming language.

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Syntax help

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition If-Else is used.

if(conditional-expression) {
   //code
}
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   //code
}

You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.

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Switch is an alternative to If-Else-If ladder.

switch(conditional-expression){    
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 code to be executed when all the above cases are not matched;    
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do {  
 // code 
} while (condition);

Functions

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How to declare a Function:

return_type function_name(parameters);

How to call a Function:

function_name (parameters)

How to define a Function:

return_type function_name(parameters) {  
 // code
}