[AD] 20171109 作業1

2 like 0 dislike
1.3k 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 | 1.3k 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:172.69.58.119
©2016-2024

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 | 1.6k 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 | 1.8k 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 | 256 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 | 322 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
183,443 answers
172,219 comments
4,824 users