c++ search char in string code example
Example: std string find character c++
#include <iostream>
#include <string>
int main ()
{
std::string str ("There are two needles in this haystack with needles.");
std::string str2 ("needle");
std::size_t found = str.find(str2);
if (found!=std::string::npos)
std::cout << "first 'needle' found at: " << found << '\n';
found=str.find("needles are small",found+1,6);
if (found!=std::string::npos)
std::cout << "second 'needle' found at: " << found << '\n';
found=str.find("haystack");
if (found!=std::string::npos)
std::cout << "'haystack' also found at: " << found << '\n';
found=str.find('.');
if (found!=std::string::npos)
std::cout << "Period found at: " << found << '\n';
str.replace(str.find(str2),str2.length(),"preposition");
std::cout << str << '\n';
return 0;
}