2 strings, the second one has to be a substring of the first

[sunny50]

if (str == str2)

else if (str != str2)

string str2 = str.substr ();http://www.cplusplus.com/forum/general/

[Thomas1965]

To find a substring you need to use the find function of the string.
http://www.cplusplus.com/reference/string/string/find/