#include <stdio.h>
#pragma warning(disable:4996)
int main()
{
	// 2번문제
	double x;
	printf("x값입력 : ");
	scanf("%lf", &x);
	printf("2x^3 - 3x^2 + 1/x = %lf \n",((2*(x*x*x)) - (3*(x*x)) + (1/x) ));
	getchar();
	// 3번문제
	char input,result;
	printf("알파벳 입력 : ");
	scanf("%c", &input);
	if (input >= 'a'&& input <= 'z')
		result = input - 32;
	else if (input >= 'A' && input <= 'Z')
		result = input + 32;
	printf("결과 : %c\n", result);
 
	return 0;
}

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