Hi everyone! I am new on this forum.
I am writing a little program on C++ where I should reverse a word using pointers. I have wrote it but my output is blank. I wish to understand why and what I get wrong.
Here is my code:
int len(const char* s)
{
int n = 0;
while (*s != '\0')
{
++n;
++s;
}
return n;
}
char* reverse_word(char* c)
{
int n = len(c);
char* p2 = new char[n + 1];
char* temp = &p2[n];
while(*c != '\0') *temp-- = *c++;
return p2;
}
int main(int argc, const char * argv[])
{
char ar[] = {"Casa"};
char* p = &ar[0];
char* p1 = nullptr;
p1 =reverse_word(p);
return 0;
}Thank you very much!
Dump the content of p2 in your reverse_word and you'll see what's happening.
char* reverse_word(char* c)
{
int n = len(c);
char* p2 = new char[n + 1];
char* temp = &p2[n];
while(*c != '\0') *temp-- = *c++;
//Dump the content of p2
for(int i = 0; i < n + 1; ++i ) {
std::cout << (int)p2[i] << std::endl;
}
return p2;
}(By the way, you should delete[] the memory region allocated with new[] .)
