[AD] 20171109 作業1

2 like 0 dislike
6.1k 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 | 6.1k 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:172.69.17.66
©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 | 8.5k 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 | 9.3k 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 | 1.3k 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