[AD] 20171109 作業1

2 like 0 dislike
9.8k 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 | 9.8k 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:104.23.243.108
©2016-2026

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 | 11.7k 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 | 13.4k 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 | 1.9k 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 | 1.9k 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