[AD] 20171109 作業1

2 like 0 dislike
6.7k 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 | 6.7k 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:172.69.130.93
©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 | 9.1k 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 | 10k 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 | 1.4k 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 | 1.5k 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