2 like 0 dislike
9.5k 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 | 9.5k 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:104.23.197.94
©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
| 11.4k 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
| 13k 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
| 1.9k 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