CODEWITHSUNDEEP
c++stringparsing
Tyson B.
Tyson B.

Reputation: 31

C++ find word in string multiple times

I'm currently trying to find a word inside a string. I'm using string::find(). However this only finds the word in the string for one time.

string a = "Dog";
string b = "I have a dog, his name is dog";

if (b.find(a) != string::npos)
{
    ...
}

Is there a way to scan string b to see how many times the word "dog" appears?

Upvotes: 2

Views: 1346

Answers (1)

iBug
iBug

Reputation: 37217

Use a loop until you can't find anymore.

std::size_t count = 0, pos = 0;
while ((pos = b.find(a, pos)) != std::string::npos) {
    pos += a.size(); // Make sure the current one is skipped
    count++;
}
// Now you have count

Upvotes: 2

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