Financial Management
| Time Limit: 1000MS | Memory Limit: 10000K | |
| Total Submissions: 126087 | Accepted: 55836 |
Description
Larry graduated this year and finally has a job.
He‘s making a lot of money, but somehow never seems to have enough. Larry has
decided that he needs to grab hold of his financial portfolio and solve his
financing problems. The first step is to figure out what‘s been going on with
his money. Larry has his bank account statements and wants to see how much money
he has. Help Larry by writing a program to take his closing balance from each of
the past twelve months and calculate his average account balance.
Input
The input will be twelve lines. Each line will
contain the closing balance of his bank account for a particular month. Each
number will be positive and displayed to the penny. No dollar sign will be
included.
Output
The output will be a single number, the average
(mean) of the closing balances for the twelve months. It will be rounded to the
nearest penny, preceded immediately by a dollar sign, and followed by the
end-of-line. There will be no other spaces or characters in the output.
Sample Input
100.00
489.12
12454.12
1234.10
823.05
109.20
5.27
1542.25
839.18
83.99
1295.01
1.75
Sample Output
$1581.42
Source
水题，求平均数。
题意：给你多个数，要求你输出他们的平均数。
思路：没什么好说的……
代码：
1 #include <iostream>
2 #include <stdio.h>
3 using namespace std;
4
5 int main()
6 {
7 double sum = 0,n;
8 int num=0;
9 //freopen("./a.txt","r",stdin);
10 while(cin>>n){ //输入
11 sum+=n;
12 num++;
13 }
14 printf("$%.2f\n",sum/num);
15 return 0;
16 }
Freecode : www.cnblogs.com/yym2013