[AD] 20171109 作業1

2 like 0 dislike
8.8k 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 | 8.8k 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:104.23.197.65
©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 | 10.5k 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 | 12.1k 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 | 1.7k 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 | 1.7k 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