#include using namespace std; // Maximum number of digits in output // x^n where 1 <= x, n <= 10000 and overflow may happen #define MAX 100000 // This function multiplies x // with the number represented by res[]. // res_size is size of res[] or // number of digits in the number // represented by res[]. This function // uses simple school mathematics // for multiplication. // This function may value of res_size // and returns the new value of res_size int multiply(int x, int res[], int res_size) { // Initialize carry int carry = 0; // One by one multiply n with // individual digits of res[] for (int i = 0; i < res_size; i++) { int prod = res[i] * x + carry; // Store last digit of // 'prod' in res[] res[i] = prod % 10; // Put rest in carry carry = prod / 10; } // Put carry in res and // increase result size while (carry) { res[res_size] = carry % 10; carry = carry / 10; res_size++; } return res_size; } // This function finds // power of a number x void power(int x, int n) { //printing value "1" for power = 0 if (n == 0) { cout << "1"; return; } int res[MAX]; int res_size = 0; int temp = x; // Initialize result while (temp != 0) { res[res_size++] = temp % 10; temp = temp / 10; } // Multiply x n times // (x^n = x*x*x....n times) for (int i = 2; i <= n; i++) res_size = multiply(x, res, res_size); cout << x << "^" << n << " = "; for (int i = res_size - 1; i >= 0; i--) cout << res[i]; } // Driver program int main() { int exponent, base; printf("Enter base "); scanf("%id \n", &base); printf("Enter exponent "); scanf("%id", &exponent); power(base, exponent); return 0; }