[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:172.70.126.150
©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