[AD] 20171109 作業1

2 like 0 dislike
4.2k 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 | 4.2k 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:172.69.58.231
©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 | 6.2k 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 | 6.5k 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 | 905 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 | 982 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