0 like 0 dislike
3.2k 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
| 3.2k 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:104.23.197.64
©2016-2026

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
| 4.9k 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
| 2.7k 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
| 3.2k 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
| 5.1k 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
| 16.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users