cin ">>" token undefined

[karamelax]

using namespace std;
#include <iostream>

class Person{
public:
int age;
int t;
Person(int initialAge);
void amIOld();
void yearPasses();
};
cin>>initialAge ;
if ( initialAge >=0)
age=initialAge ;
if( age<4|age>30)
int t=t+1;
cout<<"setting age to 0.";
if( t>4)
cout<<"number of test casess exceeded.";
if(age<13)
cout<<"you are young.";
if (age>13&age<=18)
cout<<"you are teenager.";
if (age>18)
cout<<"you are old.";
return 0;

compiler compiled codes and "<<" is undefined. are there any further codes to overcome problem?

[SamuelAdams]

int initialAge;
cin >> initialAge;

[karamelax]

">>" token undefined again.

[whitenite1]

@karamelax

Few problems with your code, as it is..

1. You have no main().
Line after your class definition, should be int main() { and the line after return 0;, should be }
2. if( age<4|age>30) should be if( age<4||age>30)
Double '||' for 'OR'.
3. if (age>13&age<=18) should be if (age>13&&age<=18)
Double '&&' for 'AND'.
4. You increase the variable ''t' but it's uninitialized, so it's unknown what the value is.

There are other errors, but they can be addressed later..

[karamelax]

my code work only problem is ">>" undefined.

11 C:\Dev-Cpp\Untitled2.cpp expected constructor, destructor, or type conversion before '>>' token

[whitenite1]

@karamelax

Could you then show the entire source code? What you have here, will not compile, as there is no main() function.

[karamelax]

with added main()

using namespace std;
#include <iostream>
int main();
int age;
int t;

void amIOld();
void yearPasses(); int initialAge;


cin >> initialAge ;
if ( initialAge >=0)
age=initialAge ;
if( age<4|age>30)
int t=t+1;
cout<<"setting age to 0.";
if( t>4)
cout<<"number of test casess exceeded.";
if(age<13)
cout<<"you are young.";
if (age>13&age<=18)
cout<<"you are teenager.";
if (age>18)
cout<<"you are old.";
return 0;

[whitenite1]

@karamelax

Even that code will not compile. It still doesn't have a main() function. ( I showed how with problem fix #1, above.

Here is your program, in a correct format, and actually using your Person class, that you defined, but never used.

#include <iostream>

using namespace std;

class Person{
public:
	int age;
	int initialAge;
	int t;
	void amIOld(); // Creating and using later ??
	void yearPasses(); // Creating and using later ??
};


int main()
{
	Person You;
	You.t = 0;
	cout << "Please enter your current age." << endl;
	cin >> You.initialAge;
	if (You.initialAge >= 0)
		You.age = You.initialAge;
	if (You.age < 4 || You.age>30)
	{
		You.age=0;
		cout << "setting age to 0.";
		You.t++;
		// Not sure what this is supposed to do
	}
	if (You.t > 4)
		cout << "number of test cases exceeded.";
	if (You.age < 13)
		cout << "You are young.";
	if (You.age > 12 && You.age < 20)
		cout << "You are teenager.";
	if (You.age > 19)
		cout << "You are old.";

	cout << endl << endl;
	return 0;
}

[karamelax]

its an online example from a website. Im trying to figure out ">>" undefined problem. Besides code you offered has same ">>" problem. im using devC++
11 C:\Dev-Cpp\Untitled2.cpp expected constructor, destructor, or type conversion before '>>' token

[whitenite1]

@karamelax

Well, I'm then not sure what you're doing wrong, as I put that source code into my Dev-Cpp (ver 5.11) and it compiled an ran, flawlessly. Good luck on your future programming endeavors.

[karamelax]

mine is devc++4.9 i shall upgrade it. thank you and likewise