大虾们问一个很白的问题
class Oper
{
public static void main(String args[])
{
//int a=3;int b=4;
// System.out.print(a*b);
char oper=args[0].charAt(0);
int a=Integer.parseInt(args[1]),b=Integer.parseInt(args[2]);
int c=0 ;
switch (oper)
{
case '+':
System.out.print(a+""+oper+b+"="+(a+b));
break;
case '-':
System.out.print(a+""+oper+b+"="+(a-b));
break;
case '*':
c=a*b;
System.out.print(a+""+oper+b+"=" + c);
break;
case '/':
System.out.print(a+""+oper+b+"="+(a/b));
break;
}
}
}
为什么不能执行乘法运算