0 like 0 dislike
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
| 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:172.69.214.39
©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
| 3.3k 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
| 1.7k 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
| 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
| 3.3k 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
| 10.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users