[AD] 20171109 作業1

2 like 0 dislike
7.7k 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 | 7.7k 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:104.23.243.164
©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 | 9.8k 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 | 11k 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 | 1.5k 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