memcpy() - Buffer Manipulation Function
How is "memcpy()" used in C++?
Explanation
memcpy() buffer manipulation copies the "count" characters from the array block, "str2" to str1". When the arrays overlap behaviour of this function is undefined, this also returns a pointer to "str1". This function simply copies byte by byte characters of the block from the array.
void *memcpy(void *str1, void *str2, size_t count);
Result :
Array str1 is:Memory copy string
Array str2 is:Memory copy string
In the above example, this buffer manipulation is used to copy block of contents of "str2" to "str1", the count is same as the length of "str1".
Syntax:
void *memcpy(void *str1, void *str2, size_t count);
Example :
| #include <stdio.h> #include <string.h> int main () { char str1[40]; char str2[]="Memory copy string"; memcpy (str1,str2,strlen(str2)+1); printf ("Array str1 is: %s\nArray str2 is: %s\n",str1,str2); return 0; } |
Result :
Array str1 is:Memory copy string
Array str2 is:Memory copy string
In the above example, this buffer manipulation is used to copy block of contents of "str2" to "str1", the count is same as the length of "str1".
