[AD] 20171109 作業1

2 like 0 dislike
3.6k 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 | 3.6k 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:172.69.17.160
©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 | 4.5k 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 | 5.3k 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 | 759 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 | 829 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