0 like 0 dislike
2.6k 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
| 2.6k 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:172.70.50.50
©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
| 4.2k 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
| 2.2k 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
| 2.7k 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
| 4.3k 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
| 12.8k views
12,783 questions
183,442 answers
172,219 comments
4,824 users