0_0_18442500_11045\Main.java:17: 错误: 需要')' System.out.println(a+" "+"+"+b+" "+"="+" "c); ^ 0_0_18442500_11045\Main.java:17: 错误: 非法的表达式开始 System.out.println(a+" "+"+"+b+" "+"="+" "c); ^ 2 个错误