[정올 2514] 문자열 찾기

http://www.jungol.co.kr/bbs/board.php?bo_table=pbank&wr_id=1775&sca=99&sfl=wr_hit&stx=2514 

JUNGOL

#include <stdio.h>

char st[10010];
int nKOI, nIOI;

int main()
{
	scanf("%s", st);

	for (int i = 0; st[i] != 0;)
	{
		if (st[i] == 'K')
		{
			if (st[i + 1] == 'O' && st[i + 2] == 'I')
			{
				nKOI++;
				i += 2;
			}
			else i++;
		}
		else if (st[i] == 'I')
		{
			if (st[i + 1] == 'O' && st[i + 2] == 'I')
			{
				nIOI++;
				i += 2;
			}
			else i++;
		}
		else i++;
	}

	printf("%d\n%d\n", nKOI, nIOI);

	return 0;
}