C++ user-define function

[sara9111]

How i solve this problem ?? i try, but i don't know wts the wrong??

A.Write the defintion of function one so that it returns the sum of x and y if x greater than y, it sholud return x mines 2 times y.
B.Write the defintion of function two sa fllos: 1.read a number and stor it in z. 2.Update the value of z by adding the value of a to its previous value.
3.Assign the varable first the value returned by function one with parameters 6 and 8. 4.Update the value of first by adding the value of x to its pervious value.
5.If the value of z is more thab twice the value of first. return z; otherwise return 2 times first mines z.
C.Write a c++ program that tests parts a and b. (Declear additional varables in the function main, if necessary).

# include <iostream>
using namespace std; 
int one (int x, int y)
double two (int x, double a)

int main ()

{
	int num;
	double dec;

    cout<<"please enter two integers numbers: ";
    cin>>x>>y;

    cout<<"please enter a double number: ";
	cin>>a;

	num = int one (int x, int y);
	
	dec = double two (int x, double a);
	
	first = int one (int x=6, int y=8)

	return 0;
}

int one (int x, int y)

{
	if (x > y)
		return x + y;

	else
		return x= y - 2;
}

double two (int x, double a)

{
	int first;
	double z;

	cout<<z += a;
	
	cout<<first += x;

	if (z > first * 2)
		return z;

	else
		return (first * 2) - z;
}

[wildgoose]

You didn't follow your own instructions

//Write the defintion of function one so that it returns the sum of x and y if x greater than y, it sholud return x mines 2 times y.
int one (int x, int y)

{
//   if (x > y)
  if (x <= y)
      return x + y;
   else
//      return x= y - 2;
      return (x - 2) * y;
}

I suggest you recompare the instructions to your functions!

[Hiroshe]

Look up how to make and use functions.
By the way, use code tags in your post.
Good luck.

[jesseb07]

you will also need to define x, y, a, and first before you can use them in main()