摘要： #include#includeint main(void){ int i,n,sum; printf("Enter n:"); scanf("%d",&n); sum=0; for(i=1;i<=n;i++){ sum=sum+pow(2,i); } printf("result=%d\n",sum); return 0;} 阅读全文

摘要： #include#includeint main(){ int m,y; double rate,money,loan; double s(double rate,double loan,int m); printf("Enter loan,rate:"); scanf("%lf%lf",&loan,&rate); for(y=5;y<=30;y++){ m=12*y; money=s(rate,loan,m); printf("年分%d 月还款额%.1f\n",y,money); } ... 阅读全文

摘要： #includeint main(void){ int i,n; double item,sum,flag; flag =1; sum =0; printf("Enter n:"); scanf("%d",&n); for(i=1;i<=n;i++){ item=(flag*i)/(2*i-1); flag=-flag; sum=sum+item; } printf("sum=%f\n",sum); } 阅读全文

摘要： #includeint main(void){ int m,n,i; double y; y=0; printf("Entern,m:"); scanf("%d%d",&m,&n); for(i=m;i<=n;i++) y=y+(i*i+1.0/i); printf("y=%Lf\n",y); } 阅读全文