0 like 0 dislike
3.1k 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
| 3.1k 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:104.23.197.94
©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
| 16.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users