[AD] 20171109 作業1

2 like 0 dislike
2.9k 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 | 2.9k 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:172.70.130.32
©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 | 3.7k 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 | 4.1k 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 | 599 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 | 672 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
183,443 answers
172,219 comments
4,824 users