[AD] 20171109 作業1

2 like 0 dislike
5.3k 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 | 5.3k 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:172.71.255.50
©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 | 7.7k 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 | 8.2k 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 | 1.2k 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 | 1.2k 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