0 like 0 dislike
471 views

You are requested to help in writing a program to perform addition of two large number up to 50-digits. In C there is no builtin datatype for large number, but we can use characters and array to solve the problem.

Input: The input will contain two positive integers are separated by a blank, the two positive integers do not exceed 50-digits.

Output: Sum.

寫一個程式輸入兩個大數(最大50個位數),計算其總合。C語言不提供大數資料型態,但我們可以用字元和陣列來解決這個問題。

Example input:

999999999999999999999999999999 999999999999999999999999999999

Example output:

1999999999999999999999999999998

 

[Exam] asked in Final Exam
ID: 43460 - Available when: 2018-01-20 09:00 - Due to: Unlimited
| 471 views

4 Answers

0 like 0 dislike
Hidden content!
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

char input[500],s1[500],s2[500],temp;

int i,space,sum[500],carry,temp2,flag=0;

int main(){
* * ** ***** *** * * * * ****** %s",&s1,&s2);
** * * ** * ** * **** *** * *

///get space
*** * * * * ** ****** ** *** ***** *
****** * * * * **** ** * * ** * * **** * **** * ** *** '){space=i;}
    }

///get s1
** * *** * *** ** * ** * ** * * * ';i++){
*** *** ** ** * ** *** * *** *** **** * **
    }

* * ** * * * *** **** * *** * ******
///reverse input
** ** ** * * ***** * * **** *** ** ** *** **
* * ** * ** **** * * ** ** * * * * ** **
* * * * * * * ** ** * ****** * ** * * ** ** * ** ** *
* *** * ** ** ** * ** **** * * ** ** ** ** * *** * *
    }

///get reversed s2
* ** *** ** * **** *** *** * ';i++){
** * * * **** *** * * **** **** *** *** * ***** * *** *
    }

///reverse s1

*** * *** ***** * ****** ** *** * * *
* * * * * **** * * * **** **** *** * ***** * **

*** * **** *** ** * ******* * *** * *** ** * ****** **
* *** ******* * *** ** ** * **** * * ** * * ** **
    }

///sum s1 and s2
* * ** **** * * *
* ***** * *** * **** **** * * * ** * *
* * ** * **** ** * **** ** *** * ** *** ** * ** * ** * ** * * **
* **** * * * **** * ********* * * * * * *** ** * ***
*** ** * ** * * ** *** ** *** * * ** * *** * * * ** *
**** ** *** * * * * * * * *** ** **** * ** * ** * * *
* * * * * * * * ** ** ** * * ** ** **** *****

    }

** * * * * ****** ** * * ** ** **** rev:%s\n",input);
*** **** ** * *** * * *** ** rev:%s\n",s1);
** *** * * * **** ***** **** * rev:%s\n",s2);
** ** ******* ** * ****** ** ** ** * * ** * * * ** * * **** * * * **

///reverse output
* ** ** ***** * * ** *****
* *** ** *** * * * * * * **** ***** * ****

* ** * * ** ** * ** * **** * * *** ** * **** * * *
* ** *** * ** * ** ** ** **** ** ** ** *** ** *** **
    }

///print
* * *** **** * * * * * * * **
* ** * * * *** * * * ***** ** * ****** ** **** * * ** ********* * *
** *** * ** * **** * ** ********* * ** ** *** * ** * * ***** ** *** **** * * *
** ** **** * ** ** * * * *** ** ** ** * ** *** * **** * ** * *** ** * * *** * ****** * ** ** * *
* ** *** ** ****** * * * * *** * ** * ******* * **** * * ** * **** * **** * *** * * *
* * * * * * ** ** * ** **** * ***** ***** * * * * ** *

* ****** **** **** * * * * * * * ** * ** * ** * *

    }
*** * ** **** ** ****** *** *** * * *** *
    return 0;
}
answered by (-286 points)
edited by
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
0 0
prog.c: In function 'main':
prog.c:80:12: warning: multi-character character constant [-Wmultichar]
     printf('10');
            ^~~~
prog.c:80:12: warning: passing argument 1 of 'printf' makes pointer from integer without a cast [-Wint-conversion]
In file included from prog.c:1:0:
/usr/include/stdio.h:364:12: note: expected 'const char * restrict' but argument is of type 'int'
 extern int printf (const char *__restrict __format, ...);
            ^~~~~~
prog.c:80:5: warning: format not a string literal and no format arguments [-Wformat-security]
     printf('10');
     ^~~~~~
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
0 like 0 dislike
Hidden content!
#include<stdio.h>
#include<string.h>
int main()
{
* * * ***** *** * ** string1[50];
* * ** * ********* ** string2[50];

* *** ******* * ****** **** ******* * string1);
** * ** *** * ** ***** * ** string2);
* **** * **** **** ** * * arr[51]={0},i;

******* * ** * * ** *** i<strlen(string1); i++)
** ** * * * *
* * * **** *** * * *** ** * ** ** * ** *** * * ** += string1[strlen(string1) - 1 - i] - 48;
    }

* * *** ** ** ** **** i<strlen(string2); i++)
* ** ** * * ** * **
** * * * * ** ** *** * * **** * ** ***** * += string2[strlen(string2) - 1 - i] - 48;
* ** **** * * * * *

* * * ** * * * ** * * **** *** ** ** i<50; i++)
*** * * * * * * * *** ****
** * *** ********* ** ** *** **** * * ** * ** *** > 9)
* * ** ** * *** * ** *** ** * * * **** * ***
** * *** *** * *** *** * ** **** ** * ******** *** ** * ** * * ** * -= 10;
* ** * * * *** * * *** ** *** ** ** * * * * ** * **** **
* *** ***** ** * * * ** ** ***** ** **** *
***** ** ** ******** * * *

* ** * ** * * * ** ** i>=0; i--)
* * * ** * *** **
* * **** * ** * *** *** ** * *** ** * * != 0)
* ** * * * **** **** * * * *** * ** * ** * * ** * ** * *
** ** * ** ** *** * *

** * ** ** * * * ** * * i--)
** ** *** *** * ** * * * * * * ** * ** *** ***** * arr[i]);
}
answered by (-168 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
0 like 0 dislike
Hidden content!
#include <stdio.h>
int main (){
int s1,s2,l1,l2;
int num1[50],num2[50],sum[50];
printf("enter input 1: ");
* *** ** * ** * ** *
printf("enter input 2: ");
** *** * ** * ** * **
for(l1=s1[l1]!='\0')
* * ** * *** ** * * *
for(l2=s2[l2]!='\0')
** * * * ** * **** *** ** ** *
int carry=0;
int k=0;
int i=l1-1;
int j=l2-1;
* * ** * ******** *****
{
* * *** * ** * *** ****** ** ****
* * **** * *********** *
* * ** * ** *** * **** ** * * ** ** ******* * * ***
* * * * * * * ***** *** ** * * **** * *** * * ** *** * *** ** * ** **** **
*** **** * * *** ** * ** ****** ** ***** ** ** * * ** ** * * ** * * ** *** ** **
* * **** * * * ****** if (j>=0)
*** * * * ** ** * ** ****** *** * *
* **** * ** ** * **** ** ** * ** * * *** * * ** * **** ** * *** * * ** * ** * *
* * * ** ** * * * * * ***** * * ** * ** **** *** *** *** *** ** * ****** * *
** * * *** * ** ***** ** ** *** * * * *** * * *** if(carr>0)
* *** ** * * ** ** * *** * *** *** * * *
* * ** * * * ** * * ** **** ** * ** * * ** * ** ");
* ** * * **** * * ** * * ** * * * * * * *
}
for(k--;k>=0;k--)
** * * * * * * * *
** * *** * * * ****** **** *** * * * *** **
* ** ** ** ***** * * * *
  return 0;
}
answered by (16 points)
0 0
prog.c: In function 'main':
prog.c:9:10: error: subscripted value is neither array nor pointer nor vector
 for(l1=s1[l1]!='\0')
          ^
prog.c:9:20: error: expected ';' before ')' token
 for(l1=s1[l1]!='\0')
                    ^
prog.c:9:20: error: expected expression before ')' token
prog.c:10:10: error: subscripted value is neither array nor pointer nor vector
   num1=s1[l1]-'0';
          ^
prog.c:11:10: error: subscripted value is neither array nor pointer nor vector
 for(l2=s2[l2]!='\0')
          ^
prog.c:11:20: error: expected ';' before ')' token
 for(l2=s2[l2]!='\0')
                    ^
prog.c:11:20: error: expected expression before ')' token
prog.c:12:12: error: subscripted value is neither array nor pointer nor vector
     num2=s2[l2]-'0';
            ^
prog.c:17:15: error: expected ')' before ';' token
 for(;i>=0;j>=0;i--;j--;k++)
               ^
prog.c:23:13: error: expected ';' before 'carry'
             carry=(num1[i--]+num2[j]+carry)/10;
             ^~~~~
prog.c:27:13: error: expected ';' before 'carry'
             carry=(num1[j--]+num2[j]+carry)/10;
             ^~~~~
prog.c:28:18: error: 'carr' undeclared (first use in this function)
         }else if(carr>0)
                  ^~~~
prog.c:28:18: note: each undeclared identifier is reported only once for each function it appears in
0 like 0 dislike
Hidden content!
#include <stdio.h>
#include <stdlib.h>
#include <string.h>


int main()
{
** ****** * ** * * * * * a[50],b[50];
** * ** * * ** ** * * c[51]={0};
* * * ** ** ** **** ** * i;
** * **** *** ***** * * x=0;

*** * * * ** ** ** ** * *** %s",a,b);

* ** * * ** * *** *** ***** *** * ***
    {
** *** *** ***** * * * * * * * * ** * *** ** ** ** *
    }

* * ** *** * *** * * ** **
* * *** * ** *** * **** *
* * ** * *** * * * ** * ***** ** *** ** ** ***** * *
* * * *


* **** * * ** * ** ** *** *
* *** * ** *** **** * ** **
* ***** **** ** ** ** * ** *** * * * ** **
* * *** * * *** * * * *** * * ** ***** ***
*** * ** ** *** * * * ** ******* **** * * * * ****** * * ** * * *
*** * *** * ** ***** ** ***** * ** ** * * ** * * * * * * * * *** *
** ** * * ** ** ** ** * * **** *** ** ** *
    }

* **** ** * * * ** * ** *
*** * * * ** ****** * ****
** * * *** * * * * ** ***** * * * * ** ***** * != 0)
** **** * *** ** **** * * * * **
* ** * * * * ** ** **** * * ***** * * *** ** **** *** * *
******* * * *** * ** ** **** ** * * ******* ******** * * * * * ***** **** *
** * * ***** ** ** * ** * * ** ** * * * *
    }

*** * * * ** * **** ** ** * *** ***
    {
** * ******* * *** * *** * ** *** * **** * ****** ** * * *** * *
    }


*** ** * *** * *** ** *** 0;
}
answered by (-193 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.69.7.106
©2016-2024

Related questions

0 like 0 dislike
13 answers
[Exam] asked Jan 19, 2018 in Final Exam
ID: 43463 - Available when: 2018-01-20 09:00 - Due to: Unlimited
| 744 views
0 like 0 dislike
6 answers
[Exam] asked Jan 19, 2018 in Final Exam
ID: 43462 - Available when: 2018-01-20 09:00 - Due to: Unlimited
| 387 views
0 like 0 dislike
8 answers
[Exam] asked Jan 19, 2018 in Final Exam
ID: 43461 - Available when: 2018-01-20 09:00 - Due to: Unlimited
| 456 views
0 like 0 dislike
12 answers
[Exam] asked Jan 19, 2018 in Final Exam
ID: 43459 - Available when: 2018-01-20 09:00 - Due to: Unlimited
| 881 views
1 like 0 dislike
37 answers
[Exam] asked Jan 16, 2018 in Final Exam
ID: 42299 - Available when: 2018-01-17 14:00 - Due to: Unlimited
| 2.4k views
12,783 questions
183,443 answers
172,219 comments
4,824 users