[AD] 20171109 作業1

2 like 0 dislike
5.1k 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 | 5.1k 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:172.70.179.212
©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 | 7.4k 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 | 7.8k 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 | 1.1k 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 | 1.2k 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