#include <stdio.h>
 
int main() {
    int a, b, c;
 
    while (1) {
        // a 입력 (0 입력 시 종료)
        printf("a 값을 입력하세요 (0 입력 시 종료): ");
        if (scanf("%d", &a) != 1) break;
 
        // a가 0일 경우 프로그램 종료
        if (a == 0) {
            printf("프로그램을 종료합니다.\n");
            break;
        }
 
        // b 입력
        printf("b 값을 입력하세요: ");
        if (scanf("%d", &b) != 1) break;
 
        // 공식 적용: c = a - b = a + (-b)
        c = a + (-b);
 
        // 결과 출력 형식: a + (-b) = c
        printf("결과: %d + (%d) = %d\n", a, -b, c);
        printf("=====================================\n\n");
    }
 
    return 0;
}

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