Possible Duplicate:
how to check string start in C++
I need to check if wstring begins with a particular string.
const wstring str = "Hello World";
wstring temp="Hello ";
How I can check str begins with temp or not?
Asked
Active
Viewed 6,956 times
4
-
sounds a lot like http://stackoverflow.com/questions/1878001/how-do-i-check-if-a-c-string-starts-with-a-certain-string-and-convert-a-sub – celavek Jul 24 '12 at 22:34
1 Answers
11
Use wide literals for starters; then it's a breeze:
std::wstring const str = L"Hello World";
// one method:
if (str.substr(0, 6) == L"Hello ") { /* yay */ }
// another method, better:
if (str.find(L"Hello ") == 0) { /* hooray */ }
Kerrek SB
- 464,522
- 92
- 875
- 1,084
-
or if you don't want to hard code temp, use str.substr(0, temp.size()) == temp – oz10 Jul 24 '12 at 22:38
-
Shouldn't the second one be `if (str.find(L"Hello ") == 0) { /* hooray */ }` since the OP wants to know if the string starts with *Hello* – Praetorian Jul 24 '12 at 22:39
-
second one will find also the "Hello" substrings which are not at the beginning ... needs refining – celavek Jul 24 '12 at 22:39
-