[AD] 20171109 作業1

2 like 0 dislike
4.1k 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 | 4.1k 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:172.69.6.111
©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 | 5.7k 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 | 6.1k 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 | 881 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 | 952 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