/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

1 vote317 views1 answer
Cpp malloc
C++
8 votes300 views5 answers
C++ vector resize
C++
0 vote328 views1 answer
Get the absolute path of a boost filePath as a string
C++
0 vote307 views1 answer
Stack implementation through linked list
C++
9 votes315 views4 answers
Range based for loop c++
C++
0 vote342 views2 answers
How can we create 4 digit random number in c++
C++
0 vote307 views6 answers
Gcd
C++
1 vote262 views1 answer
Two elements with difference K in c++
C++
0 vote291 views1 answer
Constant qualifier c++ "error display"
C++
0 vote296 views1 answer
C++ erase remove
C++