poj 1004 -- Financial Management

最新推荐文章于 2017-04-30 13:20:08 发布

BestFSQ

最新推荐文章于 2017-04-30 13:20:08 发布

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Financial Management

Time Limit: 1000MS		Memory Limit: 10000K
Total Submissions: 182912		Accepted: 69109

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

Sample Output

$1581.42

这题就只是求12个月的平均数，但有一个坑：使用g++编译要使用float，不能使用double，或者直接使用c++编译，float，double均可。

#include <cstdio>

int main()
{
    //freopen("test.txt","r",stdin);
    double sum=0;
    for(int i=0;i<12;i++)
    {
        double money;
        scanf("%lf",&money);
        sum+=money;
    }
    printf("$%.2lf\n",sum/12);
    return 0;
}