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From: cplusplusquestion on 14 Jan 2008 17:46
Each time initial an array:

for(int i=0; i<size; i++)
for(int j=0; j<other_size; j++)
a[i][j]=0;

It is very painful procedure for a massive data., is there any good
idea?
From: Francis Glassborow on 14 Jan 2008 18:17
cplusplusquestion(a)gmail.com wrote:
> Each time initial an array:
>
> for(int i=0; i<size; i++)
> for(int j=0; j<other_size; j++)
> a[i][j]=0;
>
> It is very painful procedure for a massive data., is there any good
> idea?

try
int a[size][other_size] = {0};
From: Daniel T. on 14 Jan 2008 18:29
cplusplusquestion(a)gmail.com wrote:

> Each time initial an array:
>
> for(int i=0; i<size; i++)
> for(int j=0; j<other_size; j++)
> a[i][j]=0;
>
> It is very painful procedure for a massive data., is there any good
> idea?

int a[5][5] = { 0 };
From: cplusplusquestion on 14 Jan 2008 18:31
On Jan 15, 9:17 am, Francis Glassborow
<francis.glassbo...(a)btinternet.com> wrote:
> cplusplusquest...(a)gmail.com wrote:
> > Each time initial an array:
>
> > for(int i=0; i<size; i++)
> > for(int j=0; j<other_size; j++)
> > a[i][j]=0;
>
> > It is very painful procedure for a massive data., is there any good
> > idea?
>
> try
> int a[size][other_size] = {0};

Thanks, but the running time still no change?
From: Francis Glassborow on 14 Jan 2008 18:50
cplusplusquestion(a)gmail.com wrote:
> On Jan 15, 9:17 am, Francis Glassborow
> <francis.glassbo...(a)btinternet.com> wrote:
>> cplusplusquest...(a)gmail.com wrote:
>>> Each time initial an array:
>>> for(int i=0; i<size; i++)
>>> for(int j=0; j<other_size; j++)
>>> a[i][j]=0;
>>> It is very painful procedure for a massive data., is there any good
>>> idea?
>> try
>> int a[size][other_size] = {0};
>
> Thanks, but the running time still no change?

bench mark it and find out (I guess that a good compiler will do a good
job with that code, but a superb compiler might manage the same job with
the nested loop version.
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