[AD] 20171109 作業1

2 like 0 dislike
6.7k 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 | 6.7k 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:172.70.126.17
©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 | 9.2k 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 | 10.1k 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 | 1.4k 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 | 1.5k 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