[AD] 20171109 作業1

2 like 0 dislike
1.3k 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 | 1.3k 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:108.162.216.52
©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 | 1.6k 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 | 1.8k 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 | 256 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 | 322 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