[AD] 20171109 作業1

2 like 0 dislike
6.1k 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 | 6.1k 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:108.162.241.241
©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 | 8.5k 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 | 9.3k 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 | 1.3k 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 | 1.3k 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