[AD] 20171109 作業1

2 like 0 dislike
9.4k 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 | 9.4k 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:104.23.197.170
©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 | 11.3k 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 | 12.8k 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 | 1.8k 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 | 1.9k 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