/C++/Find all occurrences of a substring in a string c++

Find all occurrences of a substring in a string c++

#include <string>
#include <iostream>

using namespace std;

int main()
{
    string s("hello hello");
    int count = 0;
    size_t nPos = s.find("hello", 0); // first occurrence
    while(nPos != string::npos)
    {
        count++;
        nPos = s.find("hello", nPos + 1);
    }

    cout << count;
};

Source: stackoverflow.com

Cpp string find all occurence

string str,sub; // str is string to search, sub is the substring to search for

vector<size_t> positions; // holds all the positions that sub occurs within str

size_t pos = str.find(sub, 0);
while(pos != string::npos)
{
    positions.push_back(pos);
    pos = str.find(sub,pos+1);
}

Source: stackoverflow.com

Find substring in string c++

std::string parentstring = "Hello Agnosticdev, I love Tutorials";
std::string substring = "Agnosticdev";
auto index = parentstring.find(substring);

-1

Source: agnosticdev.com

Similar codes

0 vote111 views1 answer
C++ cout colored output xcode
C++
19 votes118 views2 answers
C++ file .
C++
-5 votes131 views1 answer
Convert char or string to int or double
C++
1 vote120 views3 answers
C++ map loop through key value
C++
0 vote113 views1 answer
How to block the screen c++
C++
0 vote122 views1 answer
Remove a element from an array c++
C++
1 vote115 views1 answer
Concurrency in c++
C++
42 votes168 views10 answers
Twitter
C++
0 vote128 views1 answer
Binpow in fenwick tree
C++
2 votes125 views1 answer
Print a string with printf in c++
C++