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  1. Prepare
  2. Tutorials
  3. 30 Days of Code
  4. Day 4: Class vs. Instance
  5. Discussions

Day 4: Class vs. Instance

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1896 Discussions

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  • vinicius_robles
     + 0 comments

    JavaScript solution:

    function Person(initialAge){
    if (initialAge < 0) {
        console.log("Age is not valid, setting age to 0.");
        this.age = 0;
    } else {
        this.age = initialAge;
    }
    
  this.amIOld=function(){
   if (this.age < 13) {
    console.log("You are young.");
   } else if (this.age >= 13 && this.age < 18) {
    console.log("You are a teenager."); 
   } else {
    console.log("You are old.");
   };
   
  };
   this.yearPasses=function(){
          this.age += 1;
   };
}

  • m_ardaaycan
     + 0 comments

    4th exercise isnt available in C and idk any other language help

  • srayrock
     + 1 comment

    Python3 solution: On the same point as per my earlier message, I referred to the solution present in the Editorial section as well and tried it. It is still failing with the initial test case where initalAge is -1. Can anyone please advise on what is wrong in the code?

    class Person: def init(self,initialAge): if (initialAge < 0): print("Age is not valid, setting age to 0") self.age = 0 else: self.age = initialAge

    def amIOld(self):
    if self.age >= 18:
        print("You are old.")
    elif self.age >= 13:
        print("You are a teenager.")
    else:
        print("You are young.")

def yearPasses(self):
    self.age += 1

  • srayrock
     + 0 comments

    Python3 solution: Is there something wrong with my code? The test cases are failing. I checked the solutions from the leaderboard (even though I will not get the points now :-)) and its similar to that. I am confused here. class Person: def init(self,initialAge): if initialAge < 0: self.age = 0 print("Age is not valid, setting age to 0") else: self.age = initialAge def amIOld(self): if self.age < 13: print("You are young.") elif 13 <= self.age < 18: print("You are a teenager.") else: print("You are old.") def yearPasses(self): self.age += 1

  • bmariscal
     + 0 comments

    I think my solution it's ok, a blank line is being printed at the end of execution but I'm not allowed to modify that code and because of that I think the outcome is a "wrong" answer, please let me know if you see something wrong with my solution

    process.stdin.resume();
process.stdin.setEncoding('ascii');

var input_stdin = "";
var input_stdin_array = "";
var input_currentline = 0;

process.stdin.on('data', function (data) {
    input_stdin += data;
});

process.stdin.on('end', function () {
    input_stdin_array = input_stdin.split("\n");
    main();    
});

function readLine() {
    return input_stdin_array[input_currentline++];
}
function Person(initialAge) {
  this.age = initialAge;
  if (this.age < 0) {
      this.age = 0;
      console.log("Age is not valid, setting age to 0.");
  }
    // Add some more code to run some checks on initialAge
    this.amIOld=function(){
            // Do some computations in here and print out the correct statement to the console
            if (this.age < 13) {
                console.log("You are young.");
            } else {
                if ( this.age < 18) {
                    console.log("You are teenager.");
                } else {
                    console.log("You are old.");
                }
            }
    };
   this.yearPasses=function(){
          // Increment the age of the person in here
          this.age++;
   };
}


function main() {

var T=parseInt(readLine());
for(i=0;i<T;i++){
    var age=parseInt(readLine());
    var p=new Person(age);
    p.amIOld();
    for(j=0;j<3;j++){
        p.yearPasses();
        
    }
    p.amIOld();
    console.log("");   
    }
}