[AD] 20171109 作業1

2 like 0 dislike
4.1k 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 | 4.1k 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:172.69.59.174
©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 | 5.7k 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 | 6.1k 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 | 881 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 | 952 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