[AD] 20171109 作業1

2 like 0 dislike
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 | 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:172.71.1.142
©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 | 5.5k 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 | 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 | 861 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 | 934 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