[AD] 20171109 作業1

2 like 0 dislike
8.6k 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 | 8.6k 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:104.23.197.94
©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 | 10.4k 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 | 12k 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 | 1.7k 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 | 1.7k 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