// 1108. Defanging an IP Address #include "leetcode.h" /* * given a valid ipv4 'address', return a defanged version of that ip address. a * defanged ip address replaces every period "." with '[.]'. */ char *defangIPaddr(char *address) { char *ip = (char *)calloc(sizeof(char), sizeof("###[.]###[.]###[.]###")); char *ans = ip; for (char *i = address; *i; i++) { if (*i == '.') { *ip++ = '['; *ip++ = '.'; *ip++ = ']'; } else *ip++ = *i; } return ans; } int main() { char *a1 = "1.1.1.1", *dipa1 = defangIPaddr(a1); char *a2 = "255.100.50.0", *dipa2 = defangIPaddr(a2); printf("%s\n", dipa1); // expect: 1[.]1[.]1[.]1 printf("%s\n", dipa2); // expect: 255[.]100[.]50[.]0 free(dipa1); free(dipa2); }