[AD] 20171109 作業1

2 like 0 dislike
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 | 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:172.70.90.94
©2016-2026

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 | 9.4k 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 | 10.3k 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 | 1.5k 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