Error Handling
拿到题目后第一时间检测各个edge cases. string.size == 0; ptr == nullptr etc.Naming Convention
Do not use single character to name variables and functions. Use one or two words.代码缩进(空格)
cout << "Hello World" << endl ;
x = y;
y = y+1;
add(x, y);
if( a == b )
{
cout << "Line 1 - a 等于 b" << endl ;
}
tab与space不能共存，自己选择最喜欢的一个
参考资料: Google C++ Style Guide
