I can't fix it tell what to do

Question

https://code.sololearn.com/c6vSSQQY7afR/?ref=app

Answer 1

// Created by Mahmoud Qasrawi

#include <iostream>
using namespace std;
int main()
{
char c;
float x, y, z, av, sum;

cout<< "if you want to calculate the avareg of three numbers enter A please and if you want to calculate the summation of tow numbers enter S please "<<endl;

cin>>c;

if ((c=='a')||(c=='A'))
{
cin>>x;
cin>>y;
cin>>z;
av=(z+y+x)/3.0;
cout<<"the average is"<<av;
}

else
if ((c=='s')||(c=='S'))
{sum=x+y;
cout<<"the summation is"<<sum;
}

else
cout<<"invaild input!!!!";
return 0;
}

Answer 2

Give input as ::: a 1 2 3 then submit. It will print 2

Answer 3

Change:-
#include <iostream>
int main();
char c;
To:-
#include <iostream>
using namespace std;
int main()
{
char c;

Answer 4

The wrong you don't give the variables x , y , z value

So the program cant calculate the average

Solution:
Give the variables initial values or let the user input them there values .
Ex: x =7;
y=56;
z=13 ;

Then run the code

Answer 5

I want the user to put the values

Answer 6

You have to delete this character ( } ) from line 9

Then after if ((c == 'a' )|| (c=='A')){
// Wright this code
cin>>x ;
cin>>y;
cin>>z;
//Then write your code as it in the document
av = ...........