[AD] 20171109 作業1

2 like 0 dislike
3.8k 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 | 3.8k 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:172.71.254.74
©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 | 4.9k 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 | 5.7k 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 | 810 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 | 880 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