Global or static arrays are initialized to 0.
Here's an example for you.
# include & ltstdio.h & gt
int a[3];
int main()
{
Static int b [3];
int c[3];
for(int I = 0; I<3; i++)
{
printf("%d ",a[I]);
}
printf(" \ n ");
for(I = 0; I<3; i++)
{
printf("%d ",b[I]);
}
printf(" \ n ");
for(I = 0; I<3; i++)
{
printf("%d ",c[I]);
}
}