[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:172.71.254.106
©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