#include <cstdio>
int main()
{
int i = 9; // 변수 i
int j = 5; // 변수 j
printf("i + j = %d\n", i + j); // i + j의 결과 출력
printf("i - j = %d\n", i - j); // i - j의 결과 출력
return 0;
}
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