[AD] 20171109 作業1

2 like 0 dislike
5.5k 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 | 5.5k 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:172.70.126.9
©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 | 7.9k 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 | 8.4k 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 | 1.2k 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