2 like 0 dislike
6.7k 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 | 6.7k 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:108.162.241.185
©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
| 9.1k 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
| 10.1k 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
| 1.4k 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: 33764 - Available when: 2017-11-16 14:00 - Due to: 2017-11-16 14:30
| 1.5k 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