Java interview (2)--Java arithmetic expression

Source: Internet
Author: User

1 classdemo02{2      Public Static voidMain (string[] args) {3         //arithmetic operator +,-, *,/,%,++,--4         5         //Example 16         intA = 1;7         intb = 2;8         intc = 3;9System.out.println (a+b+c);Ten         //Results 6 One         /* A a+b+c the execution process - 1: Go to the memory to find a corresponding data - 2: Read the next operator the 3: Read the operand B after a, colleague Yaodu District B after the operator, to see whether to run first.  - 4: Calculate the results of the a+b - 5: Add the result of A+b and C -         */ +          -          +         //Example 2 A         intA = 1; at         intb = 2; -         intc = 3; -         intD = 4; -System.out.println (a+b+c*d); -         //Results -         /* in Execution Process - 1: Calculate the value of the a+b first to 2: Calculation c*d + 3: Add the value of A+b and the value of C*d -         */ the          *          $         //Example 3Panax Notoginseng         intA = 1; -         intb = 2; theSystem.out.println ((a=3) + (b=4) +a*b); +         //Results A          the          +         //Example 4 -         //Interview question: Please design an expression to determine whether a data is an odd number $         //System.out.println (5%2); $         //System.out.println (5%-2); -         //System.out.println ( -5%2); -         //System.out.println ( -5%-2); the         //result 1,1,-1,-1 -         //Conclusion:% is the symbol that provides the result of the operation by the preceding operandWuyi         return(i%2!=0) the          -          Wu         //Example 5 -         //+ +,--operator About         //int i = 1; $         //i++; is an expression where the value of the equation is the same as the value of I -         //++i; is an expression, the value of which is the value after i+1 -         //+ +,--must be a variable -         intI=1; ASystem.out.println (i+++i+++i+++i++); +         //Results Ten the         //i++ + i++ + i++ + i++ -         //1 + i++ + i++ + i++ i=2 $         //1 + 2 + i++ + i++ i=3 the         //1 + 2 + 3 + i++ i=4 the         //1 + 2 + 3 + 4 i=5 the          the          -         //Example 6 in         intI=1;  theSystem.out.println (i++ + ++i + i++ + + +)i); the         //Results About         //If you write System.out.println (i+++++i+i+++++i), the compiler will error the     } the}

Java interview (2)--Java arithmetic expression

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