Answer Posted / senthil.k,arasur

void main()
{
int a,b,c;
cout<<"Diagonal matrix";
for(a=1;a<=3;a++)
{
for(b=1;b<=3;b++)
{
c=1;
if(c==b)
{
cout<<c;
}
else
{
cout<<"0";
}
}
c++;
cout<<"\n";
}
}
output:

1 0 0
0 2 0
0 0 3

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