[AD] 20171109 作業1

2 like 0 dislike
4.7k 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 | 4.7k 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:172.69.58.223
©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 | 6.7k 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 | 7.1k 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 | 1k 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 | 1.1k 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