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printf格式串中的%f到底是float还是double?实验来证明!最近在CSDN上看到一个网友写下了类似如下代码,想以小数格式输出一个整数: int a 0 , b 0 ;printf( " %f, %d " , a, b); 可是运行结果…
题目 he basic task is simple: given N real numbers, you are supposed to calculate their average. But what makes it complicated is that some of the input numbers might not be legal. A legal input is a real number in [−1000,1000] and is accurate up to no mo…
问题:res 的值0.112450000001,精度不对,预期是0.11245
double force112.45;
double res force / Math.Pow(10, index * 3);
double force112.45;
double res force / Math.Pow(10, index * 3);
string str res.ToString(&qu…
Sting str"123456"
//Sting->int
int a Integer.parseInt(str);
//Sting->longlong l Long.valueOf(str);
//Sting->double
double vDouble.valueOf(str);其实输入数据类型加.会弹出好多封装好的方法,大家可以多试试可以发现新大陆。