String

C++

Java

Python3

new

char* s = "string";

String s = "string";

s = "string"

get

char c = s[0];

char c = s.charAt(0);

c = s[0];

length

strlen(s)

s.length()

len(s)

sub string

char* sub = malloc(10);
strncpy(sub, s+begin, end-begin);

String sub = s.substring(begin, end);

s[begin, end]

check substring

if (strstr(sub, s))

if (s.contains(sub))

if sub in s: