2 like 0 dislike
5.4k 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 | 5.4k 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:172.69.59.82
©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
| 7.8k 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
| 8.3k 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