0 like 0 dislike
2.3k 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
| 2.3k 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:108.162.216.109
©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
| 3.8k 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
| 2k 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
| 2.4k 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
| 3.9k 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
| 11.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users