foo.cc: In function 'int main()':
foo.cc:26:4: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
    if(a>x[i][2]);
    ^~
foo.cc:27:5: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
     s+=a;
     ^
foo.cc:12:8: warning: array subscript is above array bounds [-Warray-bounds]
  x[1][2]=0;
  ~~~~~~^
foo.cc:20:13: warning: array subscript is above array bounds [-Warray-bounds]
    s+=x[i][2];
       ~~~~~~^
foo.cc:26:15: warning: array subscript is above array bounds [-Warray-bounds]
    if(a>x[i][2]);
         ~~~~~~^

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