[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:172.69.17.43
©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