massive search zero

search zero in massive
# include <stdio.h>
# include <iostream.h>
main()
{
int i,j,n,x=4,y=4;
float sum=0, massiv[x][y], b[4];
cout<<"input massive[4][4]\n";
for(i=0;i<x;i++)    //ââîä ìàññèâà
for(j=0;j<y;j++)
cin>>massiv[i][j];
cout<<"massiv[4][4]\n";
for(i=0;i<x;i++)    //âûâîä ìàññèâà
{cout<<"\n"; for(j=0;j<y;j++) cout<<' '<<massiv[i][j];}
for(i=0;i<x;i=i+1)
{ for(j=0, sum=0;j<y;j++)

 {if(massiv[i][j]>0)
  {sum+=massiv[i][j], b[i]=sum;}
 }
}
 cout<<"\n Summa = "<<sum;
 for(i=0;i<4;i++)
 cout<<"\n Vektor = "<<b[i];
}