[AD] 20171109 作業1

2 like 0 dislike
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 | 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:162.158.62.88
©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 | 8.4k 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 | 9.1k 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 | 1.2k 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 | 1.3k 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