[AD] 20171109 作業1

2 like 0 dislike
5.2k 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 | 5.2k 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:172.69.130.70
©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 | 7.5k 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 | 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 | 1.1k 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 | 1.2k 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