Cannot write the output to a text file in cpp program
- by swapedoc
I have this input file "https://code.google.com/codejam/contest/351101/dashboard/do/A-large-practice.in?cmd=GetInputFile&problem=374101&input_id=1&filename=A-large-practice.in&redownload_last=1&agent=website&csrfmiddlewaretoken=OWMxNTVmMTUyODBiYjhhN2Q2OTM3ZGJiMTNhNDkwMDF8fDEzNzIxNzI1NTE3ODAzMjA%3D"
I tried to read this file :-using freopen("filename.txt",r,stdin); and then I wanted the output written to be written to another text file which I can upload in this codejam practice question for the judge.
#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
int t,k=0,a[2000];
freopen("ab.txt","r",stdin);
scanf("%d",&t);
while(t--)
{
freopen("cb.txt","w",stdout);
int c;
scanf("%d",&c);
int n;
scanf("%d",&n);
for(int i=0;i<n;i++)
scanf("%d",&a[i]);
printf("Case #%d: ",++k);
for(int i=0;i<n-1;i++)
{for(int j=i+1;j<n;j++)
if((a[i]+a[j])==c)
{printf("%d %d\n",i+1,j+1);
i=n;}
}
}
return 0;
}
This is my code.
Now the problem is the output file cb.txt contains only the last line of the input. I want the the whole of the output to be written to cb.txt,so what should I do.
