how to classify a variable?
Author
im messing around with some code, and i forgot how to classify
a variable, if thats how you'd say it. heres what i have ..
#include<iostream>
using namespace std;
int main()
{
cout<<"please type 'A'"<<input<<endl;
if input==a
{
cout<<"good job! you typed 'A'"<<endl;
}
else
{
cout<<"you failed typing 'A'"<<endl;
}
}
if says "input" was'nt declared. help?
You can do that in BASIC, but not in C++.
It says that input isn't decleared. Since you're just typing in an A, you'd need a char. So before the first cout statement add:
char input;
Also, you need to enclose input == 'a' in parenthenses, and add 'return 0;' before the last curly bracket.
It says that input isn't decleared. Since you're just typing in an A, you'd need a char. So before the first cout statement add:
char input;
Also, you need to enclose input == 'a' in parenthenses, and add 'return 0;' before the last curly bracket.
char input; // define inputcout << "Please input character 'A'\n";if (cin >> input) if (input == 'A') cout << "Cool!\n"; else cout << "You failed!\n";else cout << "I cannot read your input!\n";
Do you mean 'declare' a variable? In C/C++:
type name;// Example:int myVariable;
Author
here is my fixed code, but the program opens, then closes right
afterward .. what can i do to stop it?
#include<iostream>
using namespace std;
int main()
{
char input;
cout<<"please type 'A' \n"<<input<<endl;
if (input== 'a')
{
cout<<"good job! you typed 'A' \n"<<endl;
}
else
{
cout<<"you failed typing 'A' \n"<<endl;
}
return 0;
}
afterward .. what can i do to stop it?
#include<iostream>
using namespace std;
int main()
{
char input;
cout<<"please type 'A' \n"<<input<<endl;
if (input== 'a')
{
cout<<"good job! you typed 'A' \n"<<endl;
}
else
{
cout<<"you failed typing 'A' \n"<<endl;
}
return 0;
}
you need to use cin for input. You can't combine it in the cout statement.
cout<<"Please type a: "<<endl;
cin>>input;
cout<<"Please type a: "<<endl;
cin>>input;
Author
hurray! it works! and whats its purpose?! nothing :D
just a test, and i now know ever thing i coded in
that program. well, except what the namespace std is,
and the iostream thing.
thanks for the help people.
just a test, and i now know ever thing i coded in
that program. well, except what the namespace std is,
and the iostream thing.
thanks for the help people.
Here is a better way to do it in C++
The using namespace std; just includes our commands... such as cout << to output text to the DOS screen... well if you didnt use that, you'd have to do.. std::cout << .
#include <iostream>#include <string>using namespace std;int main(){ string input; cout << "Please type the letter A: "; cin >> input; if(input == "A") { cout << "Congratulations, you followed the instructions!" << endl; cin.get(); } else { cout << "Incorrect input!" << endl; cin.get(); } if(input == "a") { cout << "You did it correctly, but you didn't capitilize!" << endl; cin.get(); } else { cout << "Incorrect input!" << endl; cin.get(); } cin.get(); return 0;}The using namespace std; just includes our commands... such as cout << to output text to the DOS screen... well if you didnt use that, you'd have to do.. std::cout << .
shouldn't:
if(input == "A")
be:
if(input == 'A')
It's single quotes for characters, double quotes for strings.
if(input == "A")
be:
if(input == 'A')
It's single quotes for characters, double quotes for strings.
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