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 1.75Sample Output
$1581.42代码#include<stdio.h> int main(void) { double sum=0, average, i, n; for(i=0;i<12;i++) { scanf("%lf", &n); sum = sum+n; } average = sum/12; printf("$%.2lf", average); return 0; }
转载于:https://www.cnblogs.com/muxixixixi/p/10248697.html
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