/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 vote272 views1 answer
Upcasting in c++
C++
0 vote197 views1 answer
Inpout in Array c++
C++
0 vote168 views1 answer
Check alphabet c++
C++
0 vote194 views1 answer
#include <iostream> using namespace std; int main(){ int sum1 = 100+50; int sum2 = sum1+250; int sum3 = sum2+sum2; cout<< sum1 << "\n"; cout<< sum2 << "\n"; cout<< sum3 << "\n";
C++
2 votes206 views1 answer
Built in function in c++ for binary to decimal
C++
0 vote187 views1 answer
Concatenate string along with the size of the word. in c++
C++
8 votes190 views4 answers
How to iterate through a map in c++
C++
0 vote180 views1 answer
Query for rmq using sqrt decomposition
C++
0 vote179 views1 answer
C++ measure time in microseconds
C++
0 vote180 views1 answer
C++ message box error
C++