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새싹교실/2020/새싹부터나무까지/박소은/실습/20.10.09: Difference between revisions

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Line 16: Line 16:
  }
  }
== 2 ==
== 2 ==
#include <stdio.h>
  //strlen
  //포인터를 사용하되, *를 사용하지 마시오.
   
   
  int main(void)
  int strlen(const char* p)
  {
  {
  int number[10] = { 1,3,5,7,9,11,13,15,17,19 };
  int length = 0, i = 0;
int i, * p;
  while (*(p + i)) {
length++;
p = number;
  i++;
  for (i = 0; i < 10; i++)
{
  printf("%d\n", p[i]);
  }
  }
  return 0;
  return length;
  }
  }
== 3 ==
== 3 ==

Revision as of 15:52, 4 November 2020

1

#include <stdio.h>
//*를 사용하되, 포인터(p)를 사용하지 마시오.

int main(void)
{
	int number[10] = { 1,3,5,7,9,11,13,15,17,19 };
	int i, * p;

	for (i = 0; i < 10; i++)
	{
		printf("%d\n", *(number + i));
	}

	return 0;
}

2

//strlen

int strlen(const char* p)
{
	int length = 0, i = 0;
	while (*(p + i)) {
		length++;
		i++;
	}
	return length;
}

3

#include <stdio.h>
//포인터와 ++을 사용하시오.

int main(void)
{
	int number[10] = { 1,3,5,7,9,11,13,15,17,19 };
	int i, * p;

	p = number;

	for (i = 0; i < 10; i++)
	{
		printf("%d\n", *p++);
	}

	return 0;
}

4

#include <stdio.h>
//포인터를 사용하지 마시오.

int main(void)
{
	int number[3][4] = { {1,3,5,7},{9,11,13,15},{17,19,21,23} };
	int i, j, * p;

	for (i = 0; i < 3; i++)
	{
		for (j = 0; j < 4; j++)
		{
			printf("%d\n", *(*(number + i) + j));
		}
	}

	return 0;
}