#include using namespace std; int i; float j; //Declarations of variables double sum(int, float); //Declaration of a function double sum2(); //Declaration of a function int main(int argv, char * argc[]) { i = 064; j = 5.6; double k; k = sum(i,j); cout << k << endl; k = sum2(); cout << k << endl; return 0; } double sum (int abc, float def){ return abc + def; } double sum2 (){ return i + j; }