2 like 0 dislike
8.6k 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 | 8.6k 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
| 10.4k 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
| 12k 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
| 1.7k 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
| 1.7k 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