/in/foo.c: In function 'main':
/in/foo.c:22:4: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
    if(x1==0) 
    ^~
/in/foo.c:24:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
     x++;
     ^