Algorithm
Triangle
Adapted by Neilor Tonin, URI 
Brazil
Read three point floating values (A, B and C) and verify if is possible to make a triangle with them. If it is possible, calculate the perimeter of the triangle and print the message:
Perimetro = XX.X
If it is not possible, calculate the area of the trapezium which basis A and B and C as height, and print the message:
Area = XX.X
Input
The input file has tree floating point numbers.
Output
Print the result with one digit after the decimal point.
| Input Sample | Output Sample |
|
6.0 4.0 2.0 |
Area = 10.0 |
|
6.0 4.0 2.1 |
Perimetro = 12.1 |
Code Examples
#1 Code Example with C Programming
Code -
C Programming
#include <stdio.h>
int main()
{
float A, B, C, areaTraphisium, perimeterTriangle ;
scanf("%f %f %f", &A, &B, &C);
if ((A < (float)(B+C)) && (B < (float)(A+C)) && (C < (float)(B+A)))
{
perimeterTriangle = A + B + C;
printf("Perimetro = %.1fn",perimeterTriangle);
}
else
{
areaTraphisium = ((A + B) * C) / 2;
printf("Area = %.1fn",areaTraphisium);
}
return 0;
}
Input
Output
#2 Code Example with C++ Programming
Code -
C++ Programming
#include <iostream>>
#include <iomanip>>
using namespace std;
int main()
{
float a, b, c;
bool ver = false;
cin >> a >> b >> c;
float mod = b - c;
if(mod < 0)
mod = -mod;
if(mod < a && a < (b + c)){
cout << "Perimetro = " << fixed << setprecision(1) << (a + b + c) << endl;
} else {
cout << "Area = " << fixed << setprecision(1) << ((a + b) * c> / 2 << endl;
}
return 0;
}
Input
Output
#3 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 {
float A, B, C, areaTraphisium, perimeterTriangle ;
Scanner input =new Scanner(System.in);
A = input.nextFloat();
B = input.nextFloat();
C = input.nextFloat();
if ((A < (float)(B+C)) && (B < (float)(A+C)) && (C < (float)(B+A))) {
perimeterTriangle = A + B + C;
System.out.printf("Perimetro = %.1fn",perimeterTriangle);
}else {
areaTraphisium = ((A + B) * C) / 2;
System.out.printf("Area = %.1fn",areaTraphisium);
}
}
}
Input
Output