2 like 0 dislike
8.2k 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 | 8.2k 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:104.23.197.65
©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
| 10k 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
| 11.4k 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