[AD] 20171109 作業1

2 like 0 dislike
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 | 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:172.69.17.66
©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 | 9.4k 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 | 10.4k 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 | 1.5k 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