백준 2438,2439,2440,2441 (c언어)

백준2438

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
int main()
{
	int n;
	scanf("%d", &n);

	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j <= i; j++)
		{
			if (j <= i)
				printf("*");
		}
		printf("\n");
	}



	return 0;
}

백준2439

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
int main()
{
	int n;
	scanf("%d", &n);

	for (int i = 1; i <= n; i++)
	{
		for (int j = n; j > 0; j--)
		{
			if (j > i)
				printf(" ");
			else
				printf("*");
		}
		printf("\n");
	}



	return 0;
}

백준2440

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
int main()
{
	int n;
	scanf("%d", &n);

	for (int i = n; i > 0; i--)
	{
		for (int j = 0; j < i; j++)
		{
			if (j < i)
				printf("*");
			else
				printf(" ");
		}
		printf("\n");
	}



	return 0;
}

 

백준2441

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
int main()
{
	int n;
	scanf("%d", &n);

	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < i; j++)
		{
			printf(" ");
		}
		for (int k = n; k > i; k--)
		{
			printf("*");
		}
		printf("\n");
	}

	return 0;
}