#include<stdio.h>
int a1[2000000],a2[2000000],a3[2000000];
int main()
{
long i,j,m,t,d,r;
while(scanf("%ld",&t)==1)
{
for(i=0;i<t;i++)
{
scanf("%ld",&m);
{
for(j=0;j<m;j++)
{
scanf("%d%d",&a1[j],&a2[j]);
}
r=0;
for(j=m-1;j>=0;j--)
{
d=a1[j]+a2[j]+r;
if(d>9)
{
a3[j]=d%10;
r=1;
}
else
{
a3[j]=d;
r=0;
}
}
for(j=0;j<m;j++)
printf("%d",a3[j]);
printf("\n");
if(i!=t-1)
printf("\n");
}
}
}
}
If i declare array a1,a2,a3 in main() function this code is not running.Why this happened??
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