[AD] 20171109 作業1

2 like 0 dislike
8.2k 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 | 8.2k 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:104.23.197.64
©2016-2026

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 | 10k 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 | 11.4k 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 | 1.6k 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 | 1.6k 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