[AD] 20171109 作業1

2 like 0 dislike
3.5k views
小學一年級的數學

剛開始學習數學的時候，我們都是從個位數的加減乘除開始學習的，請寫一個程式，教你的程式學會個位數的加減乘除。

輸入說明：

程式會輸入三個字元，代表一個算式，會用下面的樣式呈現

運算元 運算子 運算元

其間會用單一個空白隔開，運算元是一個個位數的數子，運算子可能是+-*/中的任何一個。

輸出說明：

請輸出輸入算式的結果到整數位數

輸入範例：

1 +  2

輸出範例：

3
[Exercise] Coding (C) - asked in 2017-1 程式設計(一)AD by (18k points)
ID: 31085 - Available when: Unlimited - Due to: Unlimited
edited by | 3.5k views

23 Answers

0 like 0 dislike 
Hidden content!
#include  * *  *** ***   
#include * **   *   *   ***
int main(int argc, char const *argv[])
{
* **    ** int *  * 
 ****    **  char c;

**     **   *  ** ***   *  %c *    **** ** *  ** *  **   *  **
  ****  * * * ** * ***  ** ** switch(c)
  ** ***   **   ****  ***  ** *    {
 * *****   ***   *    * *   * *      * * *** *   case '+':
*   *   *   * * ***   ** * ** * *  * *** *  *      **     ans=a+b;
         **  *   *  *     *     *   *  ***** ** **  **   ** *  * break;
 *** ** * *    ** *   ** * *****   ***  **   case '*':
* *       * **    *** *  **        * ****   * * ***      **  ans=a*b;
      **  ******  *  * ******  ******     * *  ***   ****   break;
 * ***     *  * *   **      ***       ** case '-':
 *   ***  ** *          *  *   *   **       **      **  * ans=a-b;
    ** **   *   * * * *** **    *   *    *  *  *  ** *  *    ** break;
 **       ** *     *  *  ** * **   * *    *****   case '/':
* **  *  * * * **  *  * * *  ******    **    *  **  *     *  * * ans=a/b;
 * *  *  ** *    **** * * * *   ****   ***   *  * * *   *  * break;
 *  *     *** **  *     *   * *    *     default:
 * * **     * * ***  *****         *  **  ******  **** * * **** * *   *  * **   **** * *
** ** **  ** ***    *****    *  * * **  *  *   * *** ****** *  ****  *** break;
  **     **  *  *****   *** }

* ***   *  ****    * ** **  * * * *      ***   *    * ** **   * );

  * *  **  ** return 0;
}
answered by (114 points)
0 0
prog.c:1:1: error: expected identifier or '(' before numeric constant
 4#include <stdio.h>
 ^
prog.c:1:2: error: stray '#' in program
 4#include <stdio.h>
  ^
In file included from prog.c:2:0:
/usr/include/string.h:43:8: error: unknown type name 'size_t'
        size_t __n) __THROW __nonnull ((1, 2));
        ^~~~~~
/usr/include/string.h:46:56: error: unknown type name 'size_t'
 extern void *memmove (void *__dest, const void *__src, size_t __n)
                                                        ^~~~~~
/usr/include/string.h:62:42: error: unknown type name 'size_t'
 extern void *memset (void *__s, int __c, size_t __n) __THROW __nonnull ((1));
                                          ^~~~~~
/usr/include/string.h:65:56: error: unknown type name 'size_t'
 extern int memcmp (const void *__s1, const void *__s2, size_t __n)
                                                        ^~~~~~
/usr/include/string.h:92:48: error: unknown type name 'size_t'
 extern void *memchr (const void *__s, int __c, size_t __n)
                                                ^~~~~~
/usr/include/string.h:129:39: error: unknown type name 'size_t'
         const char *__restrict __src, size_t __n)
                                       ^~~~~~
/usr/include/string.h:137:9: error: unknown type name 'size_t'
         size_t __n) __THROW __nonnull ((1, 2));
         ^~~~~~
/usr/include/string.h:143:57: error: unknown type name 'size_t'
 extern int strncmp (const char *__s1, const char *__s2, size_t __n)
                                                         ^~~~~~
/usr/include/string.h:150:8: error: unknown type name 'size_t'
 extern size_t strxfrm (char *__restrict __dest,
        ^~~~~~
/usr/include/string.h:151:40: error: unknown type name 'size_t'
          const char *__restrict __src, size_t __n)
                                        ^~~~~~
/usr/include/string.h:280:8: error: unknown type name 'size_t'
 extern size_t strcspn (const char *__s, const char *__reject)
        ^~~~~~
/usr/include/string.h:284:8: error: unknown type name 'size_t'
 extern size_t strspn (const char *__s, const char *__accept)
        ^~~~~~
/usr/include/string.h:394:8: error: unknown type name 'size_t'
 extern size_t strlen (const char *__s)
        ^~~~~~
/usr/include/string.h:446:33: error: unknown type name 'size_t'
 extern void __bzero (void *__s, size_t __n) __THROW __nonnull ((1));
                                 ^~~~~~
prog.c: In function 'main':
prog.c:8:2: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
  scanf("%d %c %d",&a,&c,&b);
  ^~~~~
prog.c:8:2: warning: incompatible implicit declaration of built-in function 'scanf'
prog.c:8:2: note: include '<stdio.h>' or provide a declaration of 'scanf'
prog.c:24:5: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
     printf("Wrong input\n");
     ^~~~~~
prog.c:24:5: warning: incompatible implicit declaration of built-in function 'printf'
prog.c:24:5: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:28:3: warning: incompatible implicit declaration of built-in function 'printf'
   printf("%d",ans );
   ^~~~~~
prog.c:28:3: note: include '<stdio.h>' or provide a declaration of 'printf'
commented by (4.3k points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
  ** *   *    * *** 
int main()
{
 * ***   *  * *** int x,y,z;
*** * * ***** ** char a;
   ***    * *** * **   %c **   *       **   **  * **   *    *  ** ;
 *   *  *      *   **** 
  * *   * *     ****    *** * * **      
 *   **   else
*     **    if(a=='+')
** * **      *  **  * *  *  *****     ***  **
 ***      else
 **     ***  **     *
*    ***  * ** ** **  * *   *   *   
 * ***  ** **    else
* *  **  **   ***  
*  *   ***** **     * **   *  ** *   **  
 * **    *  *    
 ***  * ***   *** * * *  ** * * **
**   ** *  **
 **** * * ****** ** *** *  0;
}
answered by (172 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
        **    * *     * 
int main()
{
 int a,c,x;

 char b;
* * ***      *** * %c ** ***  * **  *    **** ****    

if(b=='*')
 ****       ***    *****   * ****
 *   *   * ***** *****  if(b=='-')
  ** *  *  *   * * *  ****   *** ********  ** **   

* *** *      ** *   *  **      *** *   * **  if(b=='+')
*  * *** * *    * ****    * ** *  *********  ****    * * *****  ****  * *  

*****  *  * *** *  * ** ** * * ****** ***  ***** *  * *   * **  *  if(b=='/')
   *     ** * ** *     ********* ****   * * *       *  *    *  * * *** *** * *  *   ****


  *  * * ***** *       *
 return 0;
}
answered by (236 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <string.h>
int main(){
    int a,b;
 *          ***  *   * c;
    *  ** *****  **  * ** *  ****** *** %c ** * * ******  * ***   * * *  *
 *  * *   * ***  * * *** * **  *      * *** **  ***   *
  *    ** **    *     *    ** ****** ****   *** *   **  0;
  *****   *   ** **   * **    **  *  ***** ** *
 *****  *** *   ***   ** *  * *  * **  *** **** ** * * *  **    0;
**  *  * * *  **   **  **  ***  * 
 * * * * *** *  ** ***  *** ** **     *     * *  * * * *  * *** *   * *    
    * ****  *    * ** *  *    if(c=='-')
  **  * * *** * ** *  * *  ***  *  ** *    *  * * *  *** *    ** **  *        ** *  ** 
    else if(c=='*')
*  * *  *   *****  ** **** * **  *  *   * **      *  * *  ** **  ****
    else if(c=='/')
    ***  **  **  ** ***** **  * *** * ****   * **** * * *** **   ** * 
***    *      *****  ******* * *
*  * * ***  ***  **    ***  ***    *   *** * **** *  *   * * *   0;
   **  *    *       *   *  0;
}
answered by (212 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <string.h>
int main(){
    int a,b;
**** ********** **       **   ** c;
  *** *  **** * *** *  *******   * *** %c * *      *  **  * **  ** *  
***     *** * *  *        **  **** * ** **  *  
  *     * *  *   ** * ** ***      ** *****   *  ** *    ** 0;
 * *   * **  **      * **        * *     * * **
 **** *   *** * *  *    * *   * * * * ** *        *  * *   0;
*    ******    *******   ***   **
*  *   *****   ********** **    ***** * **  *    *  ****** * *    ****** *** *  *
*   *  *    * *   * ******* ** if(c=='-')
* * * * *   **** **  * * *   * ******     *    **  ** ***  * *  ***   * *  *** 
    else if(c=='*')
* **            *   ** ** **** **     ***    ***  *  * **** *        ***   *  * **
    else if(c=='/')
   **      ***    * * **** *** * * ** *  **  **  * *  * **  **  ***  ******  
    ** *   **  *   ***  **  * *
** * *  **   *  **   **   **   *  **    **   *** ***  **  0;
*  *******   *** * * * *    *  ** * 0;
}
answered by (194 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
   *   **   *  *  ** *
int main()
***   **  ** * 
*       *   *  char a,b,c;
*** *    int **    * ***
  **       *   *** 
  *  *   *** * * ** *  %c     *    *  * *  * * **    ** **  *
    *****    * ***    ** **
*  ***  *    *  if(b == '+')
  * *  **  *     {
 ** **     *  *****   *  * **  *     ** 
    ****     *   *  *  *** *  ****   *  *  ***
* *    **  *** ** * * **  * ***** ***  * ** 
 **   *    * *  ** ****  * * *   
**   ** *      * * *  * * *     ****  **    * * *****  
**        *** * }
*  *   *  ***    else if(b == '-')
** **  *     * {
 * *  *    **  **      ******* **** ***  ** *
* *         *** *   *        *  ** *
             *     *  *** *****   * * ***
*   * **       
         ** ***       * ***    
 *         }
** *  **   else if(b == '*')
*****      ** *  {
   *  * *   * ***   *   ***    *  ***** ***    **
   ** **  **** *   * * * *   ** *  * *** **** *  
****** *   *** ** *   * *    **** * **  **   ** **    *
***** *   * * **   ** ***  *  *  * * 
  **   *    ****   *    ******   * ** * **       * *
  ** *** *** *   }
   ** **   *  else if(b == '/')
****** *   *   * * {
  ** * *     *  * * *  ** * **** *   ** ** **       **  
** *  *   **    **    * **   * * * **  **  
 **   * ****** * *   ***** * * * ***   ** **   * *   ***
*     * *** *     * *** *   * 
** *   **  *   *   * * *   **    ** *  *    * *****   *
*  **** *   ** * * }
* *** * *  * *** else
*** **  * *** * {
 * ***    *  **   **** * ** *        *** ** **  * *   *  *      ******
 ***  ** * * *  }
  * *   return 0;
*    ****    **   * 
}
answered by (202 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
 *   ****   *  *** 

int ** *  * *  *
{
****    ** ** * char   *   

 ** ***    **  *  
 ** * *  *  *  *   ch1 =  ****
 *** *** *   * ch2 = * *** **
***     *  * ch3 =       
* ** *    ** 
  * ** ***** if( ch2 == 43 )
  ***  ** **  *     ** * **  **  *      *   **   
 **   **** ** else if( ch2 == 42)
* * * ** ***    * *    *****  *  **  * *****  *      *
**  ** * *** else if( ch2 ==45)
*     ** * *** * **  ***** ** *   * *   * **
 **       * *  else if( ch2 == 47)
   **   * ***   * *****  *****     *  *   *   * *     
*** *  ***   * 
* ******    *  
 ****   **  *  ***  0;
 **   **
answered by (160 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
 *  **  ****  * *  *   

int * **  *  **** **
{
 ** *  *  ** *** char  * ** **

   * * *  **  **  *  *  **     ***    *** *
*****  ***     ch1 =     * *  
 **** *    * * * ch2 = * * *  
*  * **     ***** ch3 = ****  
   **  *   
 * **   * * *   if( ch2 == 43 )
**     *   **  ** *  ** * * **  ** *** * *
*****     ****** else if( ch2 == 42)
    *** **  **   *** *  ** * ****  *****   * *  * * **    
*   *** **   else if( ch2 ==45)
*  *  * **  ***  *  ***  * *** * ***** **    * *
*   *        else if( ch2 == 47)
* * ** *  * **   * *** **  *** *    ** **   *   * ***
** *    *  ** 
**  * **  * * ** 
 * **        * *   return 0;
***   *
answered by (160 points)
0 1
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include <stdlib.h>
int main()
{
*  *     ****** **  *** *   *  a,b,c;
  ** **** *   * * *** *  ****** *    **   %c *****  **  * * *   ***** *    *  
***    * ** * **  *  * * * *  d=a-'0';
* * ** *** *  ***  * ***  *** e=c-'0';
 *** **  ****** * * *   * * *
  *    **  ** *  **  *   *  *
****   ** *** ***  ****  ** ** * * ***** * *  *   ** **  * *  ********
    }
******** *   * * ****   ** if(b=='-')
*****  ****       ** ** ** **      **** ***  * ***** * **         *  ** **  ***  
 ** ** * ** ****  *  *   ** ** * if(b=='*')
  * * ** ** ** ***    *   * * **  ** * * * ****   * ** *******  *   *   
  *   ** **  ** *  **  *******
*  ****** ** * *  *    *  *** *   **           ** **  ****  *  * ***  
* **    ****** ***    *   ** * 0;
}
answered by (100 points)
1 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>

int main(void)
{
**   *   ***    ****      * a, c;
*** * ** *  *    ***   **  b;
*******     * *  *   ***    **   *  %c %d", &a, &b, &c)
 **** *** ** **  * * *  *  *  == '+')
 *   ****** *  *    *    *  **       ***   **  ***** *   a+c);
*   **  ** ** ** *** *    *** * if(b == '-')
  ***    ****   *  **** ** ****** **    * *  *    *   *  *   *    a-c);
 **   * ** **** ***    *** * **   if(b == '*')
 **** *  * * ***  *********      * **  *  * * *******  *** * ** a*c);
 ***       * ****      *** * if(b == '/')
  *   *    *   *  ** * ***  *      * * *  *  *    ***  * *  *   ** * a/c);
*   ******** ** **  **   ***
**       * * ***  ***  *   *
   * *  * ***  *      * *** **  0;
}
answered by (138 points)
0 0
prog.c: In function 'main':
prog.c:8:5: error: expected ';' before 'if'
     if(b == '+')
     ^~
prog.c:10:5: error: 'else' without a previous 'if'
     else if(b == '-')
     ^~~~
commented by (4.3k points)
Page:
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.71.254.5
©2016-2025

Related questions

2 like 0 dislike
29 answers
[AD] 20171109 作業3
[Exercise] Coding (C) - asked Nov 9, 2017 in 2017-1 程式設計(一)AD by Shun-Po (18k points)
ID: 31094 - Available when: Unlimited - Due to: Unlimited | 4.4k views
2 like 0 dislike
31 answers
[AD] 20171109 作業2
[Exercise] Coding (C) - asked Nov 9, 2017 in 2017-1 程式設計(一)AD by Shun-Po (18k points)
ID: 31088 - Available when: Unlimited - Due to: Unlimited | 5.2k views
3 like 0 dislike
9 answers
[AD] 20171116 question 1
[Exercise] True/False - asked Nov 16, 2017 in 2017-1 程式設計(一)AD by 楊修俊 (30k points)
ID: 33763 - Available when: 2017-11-16 14:00 - Due to: 2017-11-16 14:30 | 742 views
3 like 0 dislike
9 answers
[AD] 20171116 question 2
[Exercise] True/False - asked Nov 16, 2017 in 2017-1 程式設計(一)AD by 楊修俊 (30k points)
ID: 33764 - Available when: 2017-11-16 14:00 - Due to: 2017-11-16 14:30 | 805 views
1 like 0 dislike
0 answers
[AD] 20180104 作業 1 參考答案
[Resource] asked Jan 4, 2018 in 2017-1 程式設計(一)AD by 楊修俊 (30k points)
ID: 40762 - Available when: Unlimited - Due to: Unlimited | 26 views
12,783 questions
183,442 answers
172,219 comments
4,824 users