Hi, please implement these functions in c++

Grsa.cpp computeNint, int) 8 9 1/ calculate RSA's N value from p and a 10 int compute(int p. int q) | 11 // FIXME: implement this function 12 return -42; 13 } 14 15 // calculate RSA's value from p and a 16 int computePhi(int p, int q) { 17 // FIXME: implement this function 18 return -42; 19 } 20 21 // computes xy mod m 22 int powmod (int x, int y, int m) { 23 // FIXME: implement this function 24 return -42; 25 } 26 27 1/ computes the greatest common divisor of x and y 28 int gcd(int x, int y) { 29 1/ FIXME: implement Euclid's algorithm 30 return -42; 31 } 32 33 // find an integer e such that ged(e. ) = 1 34 // Hint: use rand() to find a number (in the correct range!) that works 35 int compute(int phi) { 36 // FIXME: implement this function 37 return -42; 38 } 39 be