Strings

Allocating

char *StrPtr = new char[41];

Freeing

delete[] StrPtr;

• The behavior of calling delete on an array without the "[]" is undefined.

sizeof, strlen

• Sizeof behaves differently on an array of characters than on a pointer to a string
• Strlen behaves the same in both cases.

Examples

char StrArray[41] = "hello";
char *StrPtr = StrArray;
int i;

// different result for sizeof
i = sizeof(StrArray);  /* 41, the size of the string */
i = sizeof(StrPtr);    /* 4, the size of the pointer to the string */

// same result for strlen
i = strlen(StrArray);  /* 5 */
i = strlen(StrPtr);    /* 5 */