#include <stdio.h>
 
int main() {
    int last_change_km;   // 마지막으로 엔진오일을 교체한 주행거리
    int change_interval;  // 엔진오일 교체 주기 (예: 5000km)
    int current_km;       // 현재 주행거리
 
    printf("=== 엔진오일 교체 시기 알림 프로그램 ===\n");
 
    // 사용자에게 마지막 교체 거리와 주기를 입력받음
    printf("마지막 엔진오일 교체 주행거리(km): ");
    scanf("%d", &last_change_km);
 
    printf("엔진오일 교체 주기(km): ");
    scanf("%d", &change_interval);
 
    // 현재 주행거리 입력
    printf("현재 주행거리(km): ");
    scanf("%d", &current_km);
 
    // 교체 시기 계산
    if (current_km >= last_change_km + change_interval) {
        printf(">> 엔진오일을 교체할 시기입니다!\n");
    } else {
        printf(">> 아직 엔진오일을 교체할 필요는 없습니다.\n");
    }
 
    return 0;
}

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