The easiest way to read formatted input in C++?

Question

Is there any way to read a formatted string like this, for example :48754+7812=Abcs.

Let\'s say I have three stringz X,Y and Z, and I want

Answer 1

A possibility is boost::split(), which allows the specification of multiple delimiters and does not require prior knowledge of the size of the input:

#include 
#include 
#include 

#include 
#include 

int main()
{
    std::vector tokens;
    std::string s(":48754+7812=Abcs");
    boost::split(tokens, s, boost::is_any_of(":+="));

    // "48754" == tokens[0]
    // "7812"  == tokens[1]
    // "Abcs"  == tokens[2]

    return 0;
}

Or, using sscanf():

#include 
#include 

int main()
{
    const char* s = ":48754+7812=Abcs";
    int X, Y;
    char Z[100];

    if (3 == std::sscanf(s, ":%d+%d=%99s", &X, &Y, Z))
    {
        std::cout << "X=" << X << "\n";
        std::cout << "Y=" << Y << "\n";
        std::cout << "Z=" << Z << "\n";
    }

    return 0;
}

However, the limitiation here is that the maximum length of the string (Z) must be decided before parsing the input.