Why does it say my "to_string" was not declared in this scope?
Error on line 20, 36, 44, 52, 68, 76, 82
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string polynomials::toString()
{
string temp;
if (polyVect.size()==0) {
temp = temp+ " 0";
}
//For loop goes through each element and appends it to a single string
for (int i = 1; i <= polyVect.size(); i++)
{
//Case for nx^0 becomes n
if (polyVect.at(i-1).pow == 0 && polyVect.at(i-1).coeff > 1)
{
temp = temp + " + " + to_string(polyVect.at(i-1).coeff);
}
//Case for 1x^1 becomes x
else if (polyVect.at(i-1).pow == 1 && polyVect.at(i-1).coeff == 1)
{
temp = temp + " + x";
}
//Case for nx^1 becomes nx
else if (polyVect.at(i-1).pow == 1 && polyVect.at(i-1).coeff > 1)
{
temp = temp + " + " + to_string(polyVect.at(i-1).coeff)+ "x";
}
//Case for 1x^n becomes x^n
else if (polyVect.at(i-1).pow != 1 && polyVect.at(i-1).coeff == 1)
{
temp = temp + " + x^" + to_string(polyVect.at(i-1).pow);
}
//Case for -nx^0 becomes -n
if (polyVect.at(i-1).pow == 0 && polyVect.at(i-1).coeff < -1)
{
temp = temp + " - " + to_string(-(polyVect.at(i-1).coeff));
}
//Case for -1x^1 becomes -x
else if (polyVect.at(i-1).pow == 1 && polyVect.at(i-1).coeff == -1)
{
temp = temp + " - x";
}
//Case for -nx^1 becomes -nx
else if (polyVect.at(i-1).pow == 1 && polyVect.at(i-1).coeff < 0)
{
temp = temp + " - " + to_string(-(polyVect.at(i-1).coeff))+ "x";
}
//Case for -1x^n becomes -x^n
else if (polyVect.at(i-1).pow != 1 && polyVect.at(i-1).coeff == -1)
{
temp = temp + " - x^" + to_string(polyVect.at(i-1).pow);
}
else if(polyVect.at(i-1).coeff < 1 && polyVect.at(i-1).pow > 1)
{
temp = temp + " - "+ to_string(-(polyVect.at(i-1).coeff))
+ "x^" + to_string(polyVect.at(i-1).pow);
}
//Case for the rest becomes nx^n
else if(polyVect.at(i-1).coeff > 1 && polyVect.at(i-1).pow > 1)
{
temp = temp + " + "+ to_string(polyVect.at(i-1).coeff)
+ "x^" + to_string(polyVect.at(i-1).pow);
}
}
if (polyVect.at(0).coeff > 1)
{
temp.replace(0, 3, "");
}
else if (polyVect.at(0).coeff < 1)
{
temp.replace(0, 3, "-");
}
return temp;
}
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Last edited on
Have you used -std=c++11 ? If you have, then I have no idea
Try changing to_string to std::to_string
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