2 like 0 dislike
9.3k 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 | 9.3k 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:162.159.115.9
©2016-2026

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
| 11.2k 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
| 12.8k 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
| 1.8k 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
| 1.8k 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