POJ 1004-Financial Management Financial Management Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 138422 Accepted: 57882 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 $1581.42 Source Mid-Atlantic 2001
这一题是目前遇到的最简单的题目，求输入数组的平均值，注意如果使用scanf输入double的话，格式为scanf(“%lf”,&d)，求得平均值之后，输出保留两位小数为printf(“%.2f”,d)。 代码如下： [cpp] #include<stdio.h> int main() { double rs=0,d; for(int i=0;i<12;i++) { scanf("%lf",&d); rs+=d; } printf("$%.2f",rs/12); return 0; } [/cpp] 本代码提交AC，用时0MS，内存140K。]]>