[AD] 20171109 作業1

2 like 0 dislike
2.9k 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 | 2.9k 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:172.70.127.228
©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 | 3.7k 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 | 4.1k 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 | 599 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 | 672 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