2 like 0 dislike
7.8k 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 | 7.8k 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:104.23.243.165
©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
| 9.8k 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
| 11.1k 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
| 1.6k 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
| 1.6k 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