2 like 0 dislike
5.3k 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 | 5.3k 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'
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
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
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
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
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
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
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
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
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
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 == '-')
     ^~~~
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.71.255.50
©2016-2025

Related questions

2 like 0 dislike
29 answers
[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
| 7.7k views
2 like 0 dislike
31 answers
[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
| 8.2k views
3 like 0 dislike
9 answers
[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
| 1.2k views
3 like 0 dislike
9 answers
[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
| 1.2k views
1 like 0 dislike
0 answers
[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