0 like 0 dislike
1.2k 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
| 1.2k 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:172.70.179.53
©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
| 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
| 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
| 1.2k 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
| 1.9k 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
| 5.9k views
12,783 questions
183,443 answers
172,219 comments
4,824 users