public class CalcFunction {
    String result="there is something wrong!-1";
    public void calc(int a, int b, char c) {
        if(c==‘+‘) add(a,b);
        else if(c==‘-‘) substract(a,b);
        else if (c==‘*‘)multiply(a,b);
        else if (c==‘/‘)divide(a,b);
        else System.out.println("please input correct symbol!");
    }
    
     public void add(int a,int b)
        {
         result =a + b +"";
        }
     public void substract(int a,int b)
        {
         result =a - b + "";
        }
        public void multiply(int a,int b)
        {
             result =a * b + "";
        }
        public void divide(int a,int b)
        {
            if(b!=0) result =a / b + "";
            else System.out.println("error!Divisor cannot be zero!");
        }
    
        public String getResult()
        {
            return result;
        } 
    
}