[AD] 20171109 作業1

2 like 0 dislike
8k 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 | 8k 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:104.23.243.160
©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 | 9.9k 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 | 11.3k 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