提交记录 #273
提交时间：2024-11-19 16:03:04
语言：c
状态：Accepted
编译情况：编译成功
固定测试点#1:
Accepted
0.001s
560 kB固定测试点#2:
Accepted 0.000s 496 kB额外测试点#3600:
Accepted 0.000s 232 kB44【小学】杀鸡用牛刀——要用递归啊！
#include <stdio.h>
int recursion(int n)
{
if(n<=0) return 0;
return n+recursion(n-1);
}
int main()
{
int a,b;
scanf("%d %d",&a,&b);
int c=recursion(a);
int d=recursion(b);
int sum=d-c+a;
printf("The sum from %d to %d is %d.\n",a,b,sum);
return 0;
}