[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