/in/foo.cc: In function 'int main()':
/in/foo.cc:15:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   for(j=0;j<=i;j++)
   ^~~
/in/foo.cc:17:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
    if(i==j) cout<<a1[j]<<" ";
    ^~