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:172.69.58.238
©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