[AD] 20171109 作業1

2 like 0 dislike
1.1k 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 | 1.1k 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:172.69.58.131
©2016-2024

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 | 1.3k 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 | 1.5k 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 | 222 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 | 286 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