#includeint sum1(int n){ int x=0,i; for(i=0; i <= n;i++){ x = x + i; } return(x); }//¹Ýº¹int sum2(int n){ if (n<=1) return 1; else return(n+sum2(n-1));}//¼øȯ
int main(void){ int a, total1,total2; printf("´õÇÒ °¹¼ö ÀÔ·Â : "); scanf("%d",&a); total1=sum1(a); total2=sum2(a);
printf("¹Ýº¹%d ¼øȯ%d n",total1,total2); }