qq_51700383的博客

二元一次方程#include<stdio.h>#include<math.h>int main(){ double a,b,c,derta; int i=1; while(scanf("%lf",&a)) { if(fabs(a)<1e-6) break; scanf("%lf%lf",&b,&c); printf("Case %d :\n",

#include<stdio.h>int aaa(int c){ if(c==1)return 1;elsereturn c*aaa(c-1);}int main(){ int j,n,i;double sum=0,a=0,b;scanf("%d",&n);for(i=1;i<=n;i++){for(j=1;j<=i;j++)a+=j;b=aaa(i+1);sum+=a/b;printf("%.lf %.lf\n",a,b);a=0;}