0 like 0 dislike
1.3k 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
| 1.3k 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:172.70.111.157
©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
| 2.2k 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
| 1.1k 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
| 1.3k 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
| 2.2k 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
| 6.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users