[AD] 20171109 作業1

2 like 0 dislike
6.9k 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 | 6.9k 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:108.162.241.185
©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 | 9.3k 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 | 10.2k 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 | 1.5k 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