[AD] 20171109 作業1

2 like 0 dislike
8.5k 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 | 8.5k 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:162.159.115.9
©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 | 10.3k 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 | 11.8k 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 | 1.6k 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 | 1.7k 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