[출처] 마름모 (#include <stdio.h>

int main(void)

{

int input;

int i, j, e, d;

printf("정수 입력: ");

scanf_s("%d", &input);

e = 0;

for (i = input; i > 0; i--)

{

for (j = 0; j < i; j++)

printf(" ");

printf("*");

for (d=0; d < e; d++)

printf(" ");

printf("*");

e += 2;

printf("\n");

}

for (i = 1; i <= input; i++)

{

for (j = 0; j < i; j++)

printf(" ");

printf("*");

e -= 2;

for (d = e; d > 0; d--)

printf(" ");

printf("*");

printf("\n");

}

return 0;

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