[문자열 덧셈 계산기] 김영완 미션 제출합니다. #219
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문자열 덧셈 계산기
기능 요구 사항
문자열 덧셈 계산기를 구현한다. 입력한 문자열에 포함된 숫자를 모두 더한 결과를 반환한다.
기본 규칙
커스텀 구분자
//와\n사이에 위치하는 문자를 커스텀 구분자로 사용할 수 있다.예외 처리
"[ERROR]"로 시작하는 메시지를 출력하고Error를 발생시킨 후 프로그램을 종료한다.