11-09 Exercise 1: Print a one-month calendar

Question

Write a program that prints a one-month calendar. The user specifies 2 numbers in the input:

- The number of days in the month

- The day of the week on which the month begins ( starting day of the week: 1=Sun;2=Mon;3=Tue;4=Wed;5=Thu;6=Fri;7=Sat)

寫一個程式 印出指定月份的月曆：

- 輸入一整數代表這個月有幾天

- 輸入一整數代表這個月一號星期幾 (1=星期天，2=星期一，...)

Example input:

31
3

Example output:

       1  2  3  4  5
 6  7  8  9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31

Hint: The most important part is a for statement that uses a variable i to count from 1 to n, where n is the number of days in a month, printing each value of i.   Inside the loop, an if statement tests whether i is the last day in a week; if so, it prints a newline.

Answer 1

Hidden content!
#include <stdio.h>
#include <stdlib.h>

int main()
{
***        * *   ** *   *  ***  i, j, days, start;

   ** *  ** *** ** ***  * * ***  **      * &days);
   * *** * * * **     **     ***** *  * *  *** **  * * &start);

*  *** ** ***  *  **** ***   *    * * = 1; j < start; j++)
*****  *  **  *   *** * ***  **
*****   * ** * *  ** *      **  *     ** * *  *** * * *   *  **** *   *  * ** * **** **  
 ***     **** * *  ****** 

 ***   **  ***   * *     = 1; i <= days; i++)
   ** ** ***   * **    * 
  ** ** * * *  ** * ***  *     * ****  ** * **   *    **  ***  * i);
 * **       * *****     *  *  *  * **    ** ** ** * **  ** * ** + i - 1) % 7 == 0)
 *** *****      *  *   * * * ****  * **** ** * * *  *** ******  *    ** *   * * *** * **  *** ***  *
*  ** **  **  ****** **  *** *  *  ** *******      if(i < days)
 *  *** * *   *** *  **** * *******  ***   *   *     ** ** *   * *  * *** ***** **   **  *  ");
  ** **** *   ****  * * *   ****

*   *** *     ** *** * **  * * ** 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output