[AD] 20171109 作業1

2 like 0 dislike
6.2k 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 | 6.2k 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:172.70.50.27
©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 | 8.6k 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 | 9.4k 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 | 1.4k 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