Check out example codes for "c++ code for polynomial addition". It will help you in understanding the concepts better.

Code Example 1

// Simple C++ program to add two polynomials 
#include <iostream> 
using namespace std; 
  
// A utility function to return maximum of two integers 
int max(int m, int n) {  return (m > n)? m: n; } 
  
// A[] represents coefficients of first polynomial 
// B[] represents coefficients of second polynomial 
// m and n are sizes of A[] and B[] respectively 
int *add(int A[], int B[], int m, int n) 
{ 
   int size = max(m, n); 
   int *sum = new int[size]; 
  
   // Initialize the porduct polynomial 
   for (int i = 0; i<m; i++) 
     sum[i] = A[i]; 
  
   // Take ever term of first polynomial 
   for (int i=0; i<n; i++) 
       sum[i] += B[i]; 
  
   return sum; 
} 
  
// A utility function to print a polynomial 
void printPoly(int poly[], int n) 
{ 
    for (int i=0; i<n; i++) 
    { 
       cout << poly[i]; 
       if (i != 0) 
        cout << "x^" << i ; 
       if (i != n-1) 
       cout << " + "; 
    } 
} 
  
// Driver program to test above functions 
int main() 
{ 
    // The following array represents polynomial 5 + 10x^2 + 6x^3 
    int A[] = {5, 0, 10, 6}; 
  
    // The following array represents polynomial 1 + 2x + 4x^2 
    int B[] = {1, 2, 4}; 
    int m = sizeof(A)/sizeof(A[0]); 
    int n = sizeof(B)/sizeof(B[0]); 
  
    cout << "First polynomial is \n"; 
    printPoly(A, m); 
    cout << "\nSecond polynomial is \n"; 
    printPoly(B, n); 
  
    int *sum = add(A, B, m, n); 
    int size = max(m, n); 
  
    cout << "\nsum polynomial is \n"; 
    printPoly(sum, size); 
  
    return 0; 
}

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