[AD] 20171109 作業1

2 like 0 dislike
5.4k 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 | 5.4k 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:108.162.241.32
©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 | 7.8k 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 | 8.3k 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 | 1.2k 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 | 1.2k 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