How do you accept a string and print if it is a palindrome?

Answer 1

// Return true if str is a palindrome

bool is_palindrome (char* str) {

int len;

char* cpy;

char* ptr;

bool b;

len = strlen (str);

if (!len) return false;

cpy = malloc (sizeof(char) * (len + 1));

ptr = cpy;

while (*ptr=*str)

{

if (*ptr>='A' *ptr<='Z') *ptr+=('a'-'A');

if ((*ptr>='a' && *ptr<='z') (*ptr>='0' && *ptr<='9')) {

++ptr;

} ++str;

} *ptr = '\0';

--ptr;

str = cpy;

while ((cpy!=ptr) && (cpy!=(ptr+1)) && (*cpy==*ptr))

{

++cpy;

--ptr;

}

b = (*cpy==*ptr);

free (str);

return b;

}