Sum of all submatrix

#1

I corrected the code as you said but still it is not working.
it does not print sum

#2

Hi @aslesha.j7,
here is d updated code.


in the end, when li==0,lj==0,etc and u were trying to find a[li-1], it was giving error.
Hope dis helps.

#3

I got it but did you change anything else as Im getting a diff ans on coding blocks ide and on my compiler

#4

@aslesha.j7
i made changes at
1)
for(int li=1;li<=m;li++)
{
for(int lj=1;lj<=n;lj++)
{
2)
at top declared
int a[100][100];
memset(a,0,sizeof a);

#5

what is the function of memset and why would you increase the array size

#6

@memset assign a common value to the whole array(common value=as specified by user)
i just increased the size of array for inputs with n>10.
Hope dis helps

#7

I still didnt understood memset and also it is not working on my compiler

#8

@aslesha.j7
We can use memset() to set all values as 0 or -1 for integral data types also. It will not work if we use it to set as other values.
try running dis.
include d necessary header files.
int a[5];
memset(a, 0, sizeof(a));
for (int i = 0; i < 5; i++)
cout << a[i] << " ";
cout << endl;

#9

what is the nned of using memset. Cant we do without it as Im not able to understand it

#10

what is the need of using memset. Cant we do without it as Im not able to understand it

#11

@aslesha.j7
you can do the questiion without using memset also.

#12

without memset the answer is different

#13

@aslesha.j7


refer to dis

#14

okay thank you I got it