Posted: Fri Jan 16, 2004 8:00 pm
Yes.
-turuthok-
-turuthok-
Could you show me with a simple example ?(concerning gets(),followed by the atoi() to obtain n...)
Thanks
Page 3 of 17
Posted: Sat Jan 17, 2004 3:54 am
Posted: Sat Jan 17, 2004 5:18 am
Ok, this line shall replace your cin >> n;
gets(chs); n = atoi(chs);
And don't forget to include stdlib.h
-turuthok-
gets(chs); n = atoi(chs);
And don't forget to include stdlib.h
-turuthok-
Posted: Sat Jan 17, 2004 3:50 pm
Thank you,turuthok. 
I got AC for it now. But if it is not too bothered, would you mind explaining the reason why the online-judge System refuses to accept my code and how this change of code could be accepted again.
I got AC for it now. But if it is not too bothered, would you mind explaining the reason why the online-judge System refuses to accept my code and how this change of code could be accepted again.
Posted: Sat Jan 17, 2004 4:22 pm
you can also use
gets(a);
sscanf(a,"%d",&n);
another very easy method.
gets(a);
sscanf(a,"%d",&n);
another very easy method.
Posted: Sun Jan 18, 2004 8:50 am
But what is wrong with the following way to obtain an integer? Aren't they correct?
[cpp]
cin>>n;
or scanf("%d",&n);
[/cpp]
[cpp]
cin>>n;
or scanf("%d",&n);
[/cpp]
Re: 673Parentheses Balance
Posted: Mon Jan 26, 2004 9:39 am
here are part of your code:
using gets() instead of these two method will read in the '\n' (though gets() didn't put it into your string).you can use atoi() or sscanf() to read the number you want from the string just read.
hope these will explain your question
they are correct, but differ from gets(), when you use these two, they will left a '\n' in the input stream('cause they only see the number before it). after then, you use gets(), and it see this '\n' and get it back for the first string, which will be a empty string. since this problem should run when empty string entered, you get "Yes" before your first input every time you run, so it resulted to WA.AaronWu wrote: [cpp]
cin>>n;
.
.
gets(chs);
[/cpp]
using gets() instead of these two method will read in the '\n' (though gets() didn't put it into your string).you can use atoi() or sscanf() to read the number you want from the string just read.
hope these will explain your question
Posted: Mon Jan 26, 2004 12:51 pm
Just debug with the any known debugger with watch window and you can easily find what the problem is to use scanf and gets together. There is space and endline problems with gets and scan used together.
Posted: Wed Jan 28, 2004 6:13 am
Thank you very much indeed.I've never noticed that before 
Posted: Thu Jan 29, 2004 4:06 pm
I have occurred to the same question.
I can solve when using
first gets();
then atoi();
but it is C like.
I hate to both include iostream and stdio
my question is how can I turn it to C++ iostream when occurred to the multiply input.
I can solve when using
first gets();
then atoi();
but it is C like.
I hate to both include iostream and stdio
my question is how can I turn it to C++ iostream when occurred to the multiply input.
673: WA help plzzzz
Posted: Wed Apr 28, 2004 5:37 pm
My prog is ok. But i have got wa plz help me.
My Input
[c]7
([])
(([()])))
([()[]()])()
)
()
)(
([)][/c]
My Output
[c]Yes
No
Yes
No
Yes
No
No[/c]
Are my output ok?
My Input
[c]7
([])
(([()])))
([()[]()])()
)
()
)(
([)][/c]
My Output
[c]Yes
No
Yes
No
Yes
No
No[/c]
Are my output ok?
Posted: Fri May 07, 2004 2:40 pm
hi, your outputs are okay.
some tricky cases to think of:
output is:
thank you.
some tricky cases to think of:
Code: Select all
3
()()(((
<blank line>
()())))
Code: Select all
No
Yes
NoThanx
Posted: Sat May 08, 2004 5:35 pm
Thank u very much for ur help. My program gives Wrong output for ur 1st input. I fixed the prob and got AC.
BTW, I think ur from BUET. Do u know UTTAM? He tells me abt u.
BTW, I think ur from BUET. Do u know UTTAM? He tells me abt u.
Posted: Mon May 10, 2004 4:23 am
yah, i'm from BUET. i know UTTAM too.
cheers
cheers
673 Accepted but so long time. but I think my algorithm is..
Posted: Fri May 14, 2004 9:07 am
673 Accepted but so long time. CPU=0:07.137 My God!!!!!
I think my algorithm is so simple and it should execute quickly, but I am wrong.
Why?
help me plzzzzzzz!
[cpp]
#include <stdio.h>
#include <string>
using namespace std;
int fnBalance(string s)
{
int place;
for(int i=0;s.find("[]")!=-1 || s.find("()")!=-1;i++)
{
while((place=s.find("[]"))!=-1)
s.erase(place,2);
while((place=s.find("()"))!=-1)
s.erase(place,2);
}
return s.length()==0?1:0;
}
void main()
{
FILE* fp=fopen("Input.txt","r");
int n; char c; string s;
fscanf(fp,"%d",&n);
c=fgetc(fp);//fgets(cs,MAX,fp);//skip a '\n'
for(int i=0;i<n;i++)
{
s="";//reset
while((c=fgetc(fp))!='\n' && c!=EOF)
s+=c;
printf("%s\n",fnBalance(s)?"Yes":"No");
}
}
[/cpp]
I think my algorithm is so simple and it should execute quickly, but I am wrong.
Why?
help me plzzzzzzz!
[cpp]
#include <stdio.h>
#include <string>
using namespace std;
int fnBalance(string s)
{
int place;
for(int i=0;s.find("[]")!=-1 || s.find("()")!=-1;i++)
{
while((place=s.find("[]"))!=-1)
s.erase(place,2);
while((place=s.find("()"))!=-1)
s.erase(place,2);
}
return s.length()==0?1:0;
}
void main()
{
FILE* fp=fopen("Input.txt","r");
int n; char c; string s;
fscanf(fp,"%d",&n);
c=fgetc(fp);//fgets(cs,MAX,fp);//skip a '\n'
for(int i=0;i<n;i++)
{
s="";//reset
while((c=fgetc(fp))!='\n' && c!=EOF)
s+=c;
printf("%s\n",fnBalance(s)?"Yes":"No");
}
}
[/cpp]