0 like 0 dislike
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
| 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:172.70.80.123
©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
| 3.3k 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
| 1.7k 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
| 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
| 3.3k 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
| 10.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users