[열혈 C++] 문제 01-2 풀이

다음 main 함수에서 필요로 하는 swap 함수를 오버로딩해서 구현해보자.

// main 함수
int main(void)
{
	int num1 = 20, num2 = 30;
	swap(&num1, &num2);
	std::cout << num1 << ' ' << num2 << std::endl;

	char ch1 = 'A', ch2 = 'Z';
	swap(&ch1, &ch2);
	std::cout << ch1 << ' ' << ch2 << std::endl;

	double dbl1 = 1.111, dbl2 = 5.555;
	swap(&dbl1, &dbl2);
	std::cout << dbl1 << ' ' << dbl2 << std::endl;
	return 0;
}

[실행의 예] 30 20 Z A 5.555 1.111

 

 

[풀이]

void swap(int* num1, int* num2)
{
	int tmp = *num1;
	*num1 = *num2;
	*num2 = tmp;
}

void swap(char* ch1, char* ch2)
{
	char tmp = *ch1;
	*ch1 = *ch2;
	*ch2= tmp;
}

void swap(double* dbl1, double* dbl2)
{
	double tmp = *dbl1;
	*dbl1 = *dbl2;
	*dbl2 = tmp;
}