[AD] 20171109 作業1

2 like 0 dislike
4.5k 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 | 4.5k 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:172.69.17.199
©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 | 6.5k 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 | 6.8k 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 | 955 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 | 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