The difference between a string and a character array in C language

Character array:

Char a[2]={' A ', ' B ', ' C '};

Char a[]={' A ', ' B ', ' C '};

String:

Char a[3]={"abc"};

Char a[3]= "abc"; You can omit the curly braces here

Char a[]= "ABC";    With Char a[3]={' a ', ' B ', ' C ', ' n '}; Same

The Scarlet Letter indicates why the place to become 3, because the string is assigned to the array, in the end will be added by default a character "", more than one character, if the defined array space is not enough, may cause storage errors, changes in system memory other data, causing serious consequences, such as:

Char a[2]= "abc";

A[0]= ' A ',

A[1]= ' B ',

A[2]= ' C ',

(a+3) point to address space is assigned to ' ", and this is not what the program wants, unauthorized erasure of memory data, the consequences can be imagined.

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The difference between a string and a character array in C language