[AD] 20171109 作業1

2 like 0 dislike
6.8k 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 | 6.8k 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:172.70.50.51
©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 | 9.2k 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 | 10.1k 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 | 1.4k 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 | 1.5k 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