0 like 0 dislike
1.8k 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
| 1.8k 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:172.70.130.39
©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
| 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
| 1.5k 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
| 1.8k 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
| 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
| 9.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users