Access conflict occurred when writing location

Access conflict occurred when writing location

The reasons are summarized as follows:

1: The uninitialized pointer is used (no space is allocated to the pointer)

2: The deleted pointer is used.

In short, it is the reason why the pointer is not initialized and the pointer is deleted out of bounds.

Example:
Char * STR = "ABCD"; // char STR [] = "ABCD ";

Strrev (STR );

Char * strrev (char STR []) {
Int J, I;
For (I = 0, j = strlen (STR)-1; I <j; I ++, j --){
Char TMP = STR [I];
STR [I] = STR [J]; // a conflict occurs when the write location is located.
STR [J] = TMP;
}
Return STR;
}

From: http://blog.csdn.net/pipisorry/article/details/37055183