[AD] 20171109 作業1

2 like 0 dislike
4.4k 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 | 4.4k 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:172.69.17.36
©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 | 6.3k 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 | 6.6k 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 | 931 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 | 1k 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