[AD] 20171109 作業1

2 like 0 dislike
3.6k 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 | 3.6k 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:172.70.100.123
©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 | 4.5k 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 | 5.3k 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 | 758 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 | 828 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