Add two polynomial a [ ], b[ ] in a polynomial c[ ] can any one answer

Answer 1

not sure if you mean to get polynomial c as the sum of polynomials a and b. if so, very easy if you store the coefficients of the polynomial in an array. just add the corresponding elements of the two array.

Answer 2

unfortunately, it does not allow to post the full code (too large, I suppose). so, I will post the code in parts.

Part 1:

/*This is just a crude implementation of the solution to give an idea of how to proceed. There are definitely better ways to do this, but this works just fine*/

#include<iostream>
#include<cstdlib>
#include<string>
#include<vector>

using namespace std;

vector<double> split(string str, char delimiter = ' ')
{
size_t start = 0, end = 0;
string temp;
vector<double> result;

while(end != string::npos){
start = str.find_first_not_of(string(1, delimiter), start);
end = str.find(delimiter, start);
if(start != end){
temp = str.substr(start, (end == string::npos) ? str.size() : end);
start = end + 1;
//double num = stod(temp); //you need c++11 and above to use the function stod
double num = strtod(temp.c_str(), NULL); //if your compiler does not support c++11, then use strtod, you have to include the header file "cstdlib"
result.push_back(num);
}
}

return result;
}

void printPolynomial(vector<double> polynom)
{
for(int i = polynom.size() - 1; i > 1; i--){
if(polynom[i]){ //we won't print terms with zero coefficients
cout << showpos << polynom[i];
cout << noshowpos << "x^" << i;
}
}
if(polynom[1]){
cout << showpos << polynom[1] << "x";
}
if(polynom[0]){
cout << polynom[0];
}
cout << endl;
}

Answer 3

Part 2:

int main()
{
cout << "The polynomials should be entered in the format (a0 a b c d ...) where a0, a, b, c,... are the coefficients of the monomials x0, x, x^2, x^3... (reverse order for easy computation). For example, the polynomial -7x^5 + 8x^3 - 0.5x^2 + 9 should be entered as 9 0 -0.5 8 0 -7" << endl;
cout << "Enter polynomial A: " << endl;

string input1, input2;
getline(cin, input1);
cout << "Enter polynomial B: " << endl;
getline(cin, input2);

char delimiter = ' '; //The character separating coefficients, you can change it to whatever you want
vector<double> polynom1 = split(input1, delimiter);
vector<double> polynom2 = split(input2, delimiter);
vector<double> polynom3;

int size1 = polynom1.size();
int size2 = polynom2.size();

int maxSize = (size1 > size2) ? size1 : size2;

polynom3.resize(maxSize); //set the size of polynomial C

//pad the smaller polynomial with zeros
if(size1 < maxSize){
polynom1.resize(maxSize);
}
else if (size2 < maxSize){
polynom2.resize(maxSize);
}

for(int i = 0; i < maxSize; i++){
polynom3[i] = polynom1[i] + polynom2[i];
}

cout << "Polynomial A: ";
printPolynomial(polynom1);

cout << "Polynomial B: ";
printPolynomial(polynom2);

cout << "Polynomial C = A + B:\n";
printPolynomial(polynom3);

return 0;
}

Answer 4

could you write the code is c++, please?

Answer 5

thank you so much 😊