1231 : 계산기 1

import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); String fom = sc.nextLine(); String[] fomArr = new String[2]; char opr = ' '; int result = 0; if(fom.contains("+")) { fomArr = fom.split("\\+"); opr = '+'; } if(fom.contains("-")) { fomArr = fom.split("\\-"); opr = '-'; } if(fom.contains("*")) { fomArr = fom.split("\\*"); opr = '*'; } if(fom.contains("/")) { fomArr = fom.split("\\/"); opr = '/'; } int a = Integer.parseInt(fomArr[0]); int b = Integer.parseInt(fomArr[1]); double dResult; switch (opr) { case '+': result = a + b; System.out.println(result); break; case '-': result = a - b; System.out.println(result); break; case '*': result = a * b; System.out.println(result); break; case '/': dResult = (double)a / b; System.out.printf("%.2f",dResult); break; } sc.close(); } }