This program prints out the numbers 1 to 100 (inclusive) in Dart. If the number is divisible by 3, it prints Crackle instead of the number. If the number is divisible by 5, it prints Pop. If the number is divisible by both 3 and 5, it prints CracklePop.

crackle_pop.dart

class CracklePop {

  /**
   * This program prints out the numbers 1 to 100 (inclusive). 
   * If the number is divisible by 3, it prints Crackle instead of the number. 
   * If the number is divisible by 5, it prints Pop. 
   * If the number is divisible by both 3 and 5, it prints CracklePop.
   */
  void printNumbers(){
    for (int i=1; i<=100; i++){
      if ((i%3 == 0) && (i%5 == 0)){
        print("CracklePop");
      }else if(i%5 == 0){
        print("Pop");
      }else if (i%3 == 0){
        print("Crackle");
      }else{
        print(i);
      }
    }
  }
}

// Main function
void main(){
  
  // An instance of the class CracklePop
  final result = CracklePop();
  result.printNumbers();
}