[AD] 20171109 作業1

2 like 0 dislike
3.5k 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 | 3.5k 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:172.69.17.196
©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 | 4.4k 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 | 5.2k 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 | 742 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 | 805 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