c++中的字符数组初始化为NULL

Question

What is the difference between initialising character array as this

char c[10]={0};

and this

char c[10]="";

Answer 1

char c[10]={0}; guarantees that every element of the array is 0. Note that in C++ you can write char c[10]={}; which has the same effect.

char c[10]=""; guarantees that only the first element of the array is 0; the other elements are uninitialised.