[AD] 20171109 作業1

2 like 0 dislike
6.7k 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 | 6.7k 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:172.69.130.93
©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 | 9.1k 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 | 10.1k 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 | 1.4k 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 | 1.5k 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