== 일등 ==

{{{


#include<stdio.h>
int sum(int i){
	if (i != 1)
	{
		return sum(i - 1) + i;
	}
	else
	{
		return 1;
	}

	
}
int main()
{
	int fin=0;
	int inp = 0;
	printf("입력 : ");
	scanf("%d",&inp);
	
	printf("%d", sum(inp));

}


}}}