0 like 0 dislike
1k 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
| 1k 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:172.70.127.239
©2016-2024

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
| 1.7k 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
| 848 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
| 982 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
| 1.7k 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
| 5.2k views
12,783 questions
183,443 answers
172,219 comments
4,824 users