[AD] 20171109 作業1

2 like 0 dislike
6.4k 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 | 6.4k 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:172.70.80.121
©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 | 8.8k 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 | 9.6k 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 | 1.4k 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