Question

1) Fix the Function #include <iostream> void print Num() { std::cout << number; }; int main() { int number = 35; printNum (number); return 0; (Give two ways to fix this code. Indicate which is preferable and why.) #include <iostream> void double Number (int num) {num = num * 2;} int main() { int num = 35; double Number (num); std::cout << num; // Should print 70 return 0; (Changing the return type of doubleNumber is not a valid solution.)

Answer 1

Answer 1:
#include<iostream>
// It should receive the parameter
void printNum(int number){
   std::cout<<number;
} //; is not required
int main(){
   int number=35;
   printNum(number);
   return 0;
}

Answer 2:
#include<iostream>
// we should take parameter as reference
void doubleNumber(int &num){num=num*2;};
int main(){
   int num=35;
   doubleNumber(num);
   std::cout<<num;
   return 0;
}

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