0 like 0 dislike
1.6k 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
| 1.6k 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:172.69.17.130
©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
| 2.7k 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
| 1.4k 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
| 1.7k 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
| 2.7k 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
| 8.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users