编辑代码

#include <stdio.h>
void sum(int begin,int end)
{
    int i;
    int sum=0;
    for(i=begin;i<=end;i++){
        sum+=i;
    }
    printf("%d到%d的和是%d\n",begin,end,sum);
}
int main () {
    sum(1,10);
    sum(20,30);
    sum(35,45);
    
    return 0;
}