0 like 0 dislike
2.3k 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
| 2.3k 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:172.70.80.20
©2016-2025

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
| 3.8k 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
| 2k 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
| 2.4k 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
| 3.9k 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
| 11.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users