C++ String Finding a Substring Question

Introduction

Write a program that defines the main string with a value of "Hello C++ World." and checks if a substring "C++" is found in the main string.

You can use the following code structure. 

#include <iostream> 

int main() 
{ 
    //your code here
} 



#include <iostream> 
#include <string> 

int main() 
{ 
    std::string s = "Hello C++ World."; 
    std::string mysubstring = "C++"; 
    auto mysubstringfound = s.find(mysubstring); 
    if (mysubstringfound != std::string::npos) 
    { 
         std::cout << "Substring found at position: " << mysubstringfound << '\n'; 
    } 
    else 
    { 
        std::cout << "Substring was not found." << '\n'; 
    } 
}

Both the 'C' character and the "C++" substring start at the same position in our main string.

That is why both examples yield a value of 6.

Instead of typing the lengthy std::string::size_type type for our characterfound and mysubstringfound variables, we used the auto specifier to deduce the type for us automatically.




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