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初来乍到求问为什么求平均数这种水题都WA,c++ok,g++不行。。

Posted by gcy_acm at 2016-07-18 23:14:15 
附代码
#include <cstdio>
using namespace std;
int main(){
	int i;
	double balance, sum;
	sum = 0.0;
	for (i = 0; i < 12; ++i){
		scanf("%lf", &balance);
		sum += balance;
	}
	printf("$%.2lf\n", sum / 12);
	return 0;
}
用g++怎么提交都是WA
QAQ
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