c++ - What's wrong with my strcpy? -


i tried make strcpy myself. should work, copied , pasted (almost exact code) someones post here strcpy. both give me "segmentation fault".

char* strcpy(char * destination, const char * source) {     while( (*destination++ = *source++) != '\0' )          ;     return destination; }

what's wrong code? 

char* = "hello"; cout << strcpy(a, "haha") << endl;

you trying write data segment since "hello" stored there.

therefore, when call strcpy segmentation fault.

try:

char a[] = "hello"; cout << strcpy(a, "haha") << endl;

instead.

edit: inside strcpy function, after copy, destination point end of string, need return beginning of string instead.


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