摘要：
C++中的变量获取值的方法一般有两种：一种是赋初值(初始化)，另一种是赋值。两者之间的区别：赋初值 int a=1；赋值 int a； a=1。未经赋值或赋初值的变量，它所具有的值是无意义的，它的值是所被分配的内存空间中保留的随机值，该值是无效值，不能用来进行运算。字符'0'和字符'\0'的区别：前面一个是数字字符0，它的ASCII值是十进制数48，后面一个字符表示为ASCII码值为0的字符，该字符在程序中常被称为空字符。字符串常量和字符常量的区别：两者在内存中存放所占的空间不同。字符串常量"a"占2个字节（需要存放字符串结束符'\0 阅读全文
摘要：
This is my first time to use c++ to solve the hdoj problem . from this experience , I learned how to control precision of the float . this is too important to me. As a member of my team,I am the only player always using c language to solve problems. Maybe now I need to change my role to become a C++ 阅读全文