[AD] 20171109 作業1

2 like 0 dislike
3.5k 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 | 3.5k 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:172.70.131.72
©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 | 4.3k 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 | 5.2k 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 | 734 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 | 799 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