'no match for 'operator+' (operand types are 'std::basic_string<char>' and 'double') c++

double vitesse();
string description();
string toString()
{
    return nom + " : " + description() + "\nvitesse : " + vitesse() + ", poids : " + poids;
}

this code is part of class I'm testing, and whene i try to compile it the error in the title pops up return nom + " : " + description() + "\nvitesse : " + vitesse() + ", poids : " + poids; in this line and i can't understand why?

c++oop


Solution 1:[1]

It's because the function vitesse() returns a double value, which can't be concatenated as-is with strings. I believe if you replace vitesse() in the return value with to_string(vitesse()), it would work.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Remy Lebeau

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