文章标题

/*求1*2*3*...*n的值并把各项相加*/#include<stdio.h>int main(){    int n,i,cj,sum;    printf("Input n:");    while(scanf("%d",&n)!=EOF)    {        cj=1;        sum=0;        for(i=1;i<=n;i++)        {            cj*=i;//相当于sum=sum+i;            sum+=cj;        }        printf("cj=%d,sum=%d\n",cj,sum);        printf("Input n:");    }    return 0;}