export type ExercisePartType = 'struct-definition' | 'typedef-struct' | 'array-initialization' | 'pointer-manipulation' | 'printf' | 'function-definition' | 'main-function';

export interface ExercisePart {
  id: string;
  prompt: string;
  solution: string;
  points: number;
  type: ExercisePartType;
}

export interface Exercise {
  id: string;
  title: string;
  parts: ExercisePart[];
  explanation: string;
}

export interface CheckResult {
  partId: string;
  isCorrect: boolean;
  explanation: string;
  error?: string; // To hold API or parsing errors
}