ACM学习-POJ-1004-Financial Management
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ACM学习-POJ-1003-Financial Management
Financial Management
Time Limit: 1000MS Memory Limit: 10000KTotal Submissions: 109412 Accepted: 51958
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
100.00489.1212454.121234.10823.05109.205.271542.25839.1883.991295.011.75
Sample Output
$1581.42
Source
Mid-Atlantic 2001
问题要求:
求12个数的平均数。
问题分析:
.....看到这题目,顿时吓尿了。 我做题目都是看AC率下手的。 从50%开始逐步练习。 不过这道AC率48%的题目,确实水的可以了。 估计大牛们都不屑做这个吧。 好吧,这道也没什么特别需要注意的。 就是类型转换的时候注意下就好了。 直接上代码吧。
#include <stdio.h>int main(){ int n = 0; double sum_ = 0.0; double each_month; while (~scanf("%lf", &each_month) && n < 12) { sum_ += each_month; n++; if (n==12) { printf("$%.2lf\n", sum_/(double)n); break; } } return 0;}
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