Fun4.java

packagefunsimple;

publicclassFun4 {

publicstaticvoidmain(String[] args) {
triangle(4); // test1 a = 4 -> p=12; s=4*sqrt(3);
triangle(3); // test1 a = 4 -> p=12; s=4*sqrt(3);
triangle(-3); // test1 a = 4 -> p=12; s=4*sqrt(3);
 }

/**
 * a - t.tomonli uchburchak tomoni
 * p = a+a+a = 3*a;
 * s = a*a*sqrt(3)/4;
 */
publicstaticvoidtriangle(doublea) {
if (a > 0) {
doublep = 3 * a; // perimeter
doubles = a * a * Math.sqrt(3) / 4;
// f-haqiqiy
// d-butun son
// s-string
System.out.printf("P = %.2f, S = %.2f\n", p, s);
 } else {
System.out.println("Uchburchak tomoni xato kiritildi.");
 }
 }
}