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# Category: Read and Write

## EXPRESSION

Posts 1. Biểu thức In ra tổng, tích, hiệu và thương của 2 số được nhập vào từ bàn phím. Kết quả lấy 3 chữ số sau dấu phẩy. Input: Hai số thực a, b Output: 4 giá trị tổng, hiệu, tích, thương (a/b) của hai số a và b, mỗi giá trị trên 1

## Globular

Threads: Write a program to the radius of the sphere, calculate and print area, volume of the sphere which. Know the formula for calculating the area and volume respectively: S = 4πR^2 và V = (4/3)πR^3. Lay π = 3.14 Input: Some of the radius of the sphere. Head

## The total area of ​​trade mark

Threads: Read and write program 2 integer and print out the result of the community (+), Subtraction (-), multiplication (*), division (/). The result of dividing rounded to 2 decimal. Input: A line of 2 integers a, b (other b 0) separate

## Day month Year

Threads: Write a program that reads from the keyboard 3 perform integer day, month, and output to the screen in the form of "dd / mm / yyyy". Input: A line of 3 integers separated by a space. Output: A string in the format date: dd / mm / yyyy Example: input: 5 6

## Count exponent

Threads: Enter an integer a (a <= 100), Calculate and print out the value of a2, a3, a4 Input: A unique integer a Output: Three of a2, a3, a4 each number separated by spaces. For example: input: 3 output: 9 27 81

## Hour minute second

Threads: Write a program in seconds, Change the number of seconds into the form "hh:mm:ss”. Input: A single integer. Output: A format string as above. For example: input: 7826 output: 02:10:26

## Total 2 Some raise

Threads: For 2 integers a, b. Total 2 them know (|a| and |b| <= 10 billion ). Input: A line containing 2 numbers separated by spaces. Output: A unique number is the sum of 2 number. For example: input: 2 3 output: 5

## Hello World

Threads: Write a program that prints out the string “Hello World @ Code Online”;

## Chu vi, HCN area

Threads: Input 2 is a positive integer 2 next to a, b of the rectangle (0 < a, b <= 100000). Calculate the perimeter, HCN area. Input: A line of 2 numbers separated by spaces. Output: A line of 2 of the perimeter, HCN area

## Total 2 number

Threads: For 2 integers a, b. Total 2 number. Input: A line containing 2 integers separated by spaces. Output: A single integer is the sum of 2 Some have. For example: input: 2 3 output: 5