2 like 0 dislike
8.5k 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 | 8.5k 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:104.23.197.64
©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
| 10.3k 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
| 11.8k 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: 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
| 1.7k 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