[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:104.23.197.64
©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