[AD] 20171109 作業1

2 like 0 dislike
5.5k 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 | 5.5k 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:172.69.214.39
©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 | 7.8k 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 | 8.4k 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 | 1.2k 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 | 1.2k 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