Financial Management
3000 ms | 内存限制: 65535
1
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.
输出
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.
样例输入
100.00 489.12 12454.12 1234.10 823.05 109.20 5.27 1542.25 839.18 83.99 1295.01 1.75
样例输出
1581.42
# include<stdio.h>
int main()
{
double a,sum;
int i = 12;
sum = 0;
while(i--)
{
scanf("%lf",&a);
sum = sum + a;
}
printf("%.2lf\n",sum/12.0);
return 0;
}