SUM OF TWO ARRAYS.. m not getting what is wrong with my code.. can u plz help me out

#1

#include
#include
using namespace std;
int main(){
int a[]={1,0,2,9};
int n=sizeof(a)/sizeof(a[0]);
int b[]={3,4,5,6,7};
int m=sizeof(b)/sizeof(b[0]);

 int i=n-1,j=m-1;
 int resSize=max(n,m)+1;
 int res[resSize];
 int k=resSize-1;
 int carry=0;
 while(i>=0 || j>=0){
 	int sum=carry;
 	
 	if(i>=0){
 		sum+=a[i];
	}
	if(j>=0){
		sum+=b[j];
	}
 	
 	res[k--]=sum%10;
 	carry=sum/10;
 	i--;
 	j--;
 	
 }
 while(carry){
 	res[k--]=carry%10;
 	carry=carry/10;
 }
 
 for(int i=0;i<=resSize-1;i++){
 	cout<<res[i];
 }

}

#2

Hello @shikharskj what is the error that you are getting?

#3

m getting the wrong output

#4

Hello @shikharskj here is the correct code:


but i think your approach will not pass every test case.
and please be in a habbit of sharing your code by saving it on ide.codingblocks.com

#5

what was wrong iin my code… ?

#6

@shikharskj initialise k as ressize-2

#7

why did we have to initialioze k with resSize-2??

#8

@shikharskj i have made corrections according in your logic i have just made your code correct.
i told you this code may not be correct .
we have made k initiliase with that because it was giving garbage value at first index so io tried with k-2 and it worked.

#9

if you dry run your code you will understand

#10

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