[AD] 20171109 作業1

2 like 0 dislike
4k 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 | 4k 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:172.69.58.80
©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 | 5.5k 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 | 6k 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 | 866 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 | 934 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