Algorithm
Problem Link: https://www.beecrowd.com.br/judge/en/problems/view/1117
Score Validation
Adapted by Neilor Tonin, URI 
Brazil
Write a program that reads two scores of a student. Calculate and print the average of these scores. Your program must accept just valid scores [0..10]. Each score must be validated separately.
Input
The input file contains many floating-point numbers, positive or negative. The program execution will be finished after the input of two valid scores.
Output
When an invalid score is read, you should print the message "nota invalida".
After the input of two valid scores, the message "media = " must be printed followed by the average of the student. The average must be printed with 2 numbers after the decimal point.
| Input Sample | Output Sample |
|
-3.5 |
nota invalida |
Code Examples
#1 Code Example with C++ Programming
Code -
C++ Programming
#include<bits/stdc++.h>
#define FIXED_FLOAT(x) std::fixed << std::setprecision(2) << (x)
using namespace std;
int main(){
int cnt = 0;
float sum = 0;
while(cnt != 2){
float num;
cin >> num;
if (num >= 0 && num < = 10){
sum += num;
cnt += 1;
}
else{
cout << "nota invalida" << endl;
}
}
cout << "media = " << FIXED_FLOAT(sum / cnt) << endl;
return 0;
}
Input
Output
#2 Code Example with Java Programming
Code -
Java Programming
import java.io.IOException;
import java.util.Scanner;
public class Main{
public static void main(String[] args) throws IOException{
Scanner input = new Scanner(System.in);
int cnt = 0;
float sum = 0;
while(cnt != 2){
float num = input.nextFloat();
if (num >= 0 && num < = 10){
sum += num;
cnt += 1;
}
else{
System.out.println("nota invalida");
}
}
System.out.printf("media = %.2f\n", (sum / cnt));
}
}
Input
Output
#3 Code Example with Javascript Programming
Code -
Javascript Programming
var input = require('fs').readFileSync('/dev/stdin', 'utf8');
var lines = input.split('\n');
var sum = 0;
var cnt = 0;
while(cnt != 2){
var num = parseFloat(lines.shift());
if (num >= 0 && num < = 10){
sum += num;
cnt += 1;
}
else{
console.log("nota invalida");
}
}
console.log("media =", (sum / cnt).toFixed(2));
Input
Output
#4 Code Example with Python Programming
Code -
Python Programming
sum = 0
cnt = 0
while(cnt != 2):
num = float(input())
if (num >= 0 and num <= 10):
sum += num
cnt += 1
else:
print("nota invalida")
print("media = {:.2f}".format(sum / cnt))
Input
Output