* 출력하기 문제

알고리즘

* 출력하기 문제

바보세룐 2013. 4. 24. 13:34

print like below

----****
----***
----**
----*
---*
--**
-***
****

#include <iostream>
#include <cstdlib>

using namespace std;

void print_star(const int N);

int main() {
    const int N = 4;
    print_star(N);
    return 0;
}

/**
 * N is positive integer
 */
void print_star(const int N)
{
    if (N <= 0) return; // error

const char EMPTY_SPACE = ' ';
    const char STAR = '*';

char *EMPTY_LINE = new char [N+1];
    memset(EMPTY_LINE, EMPTY_SPACE, sizeof(char) * (N+1));
    EMPTY_LINE[N] = '\0';

char *STAR_LINE = new char [N+1];
    memset(STAR_LINE, STAR, sizeof(char) * (N+1));
    STAR_LINE[N] = '\0';

int i;
    for (i = 0; i < N; i++) {
        cout << EMPTY_LINE;
        cout << STAR_LINE << endl;;
        STAR_LINE[N-i-1] = '\0';
    }

memset(STAR_LINE, '\0', sizeof(char) * (N+1));
    EMPTY_LINE[N-1] = '\0';
    STAR_LINE[0] = STAR;
    for (i = 0; i < N; i++) {
        cout << EMPTY_LINE;
        cout << STAR_LINE << endl;;
        EMPTY_LINE[N-i-2] = '\0';
        STAR_LINE[i+1] = STAR;
    }

delete [] EMPTY_LINE;
    delete [] STAR_LINE;
}

array 하나도로 가능하다 ㅠㅠ