[AD] 20171109 作業1

2 like 0 dislike
5.8k 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 | 5.8k 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:108.162.241.185
©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 | 8.2k 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 | 8.9k 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 | 1.2k 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 | 1.3k 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