[AD] 20171109 作業1

2 like 0 dislike
8.2k 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 | 8.2k 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:162.159.115.32
©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 | 10k 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 | 11.4k 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 | 1.6k 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