if(x > 0) y = 1; else if(x == 0) y = 0; else y = -1;
y=0; if(x > 0) y = 1; else if(x < 0) y = -1;
y = 0; if(x >= 0) if(x > 0)y = 1 else y = -1;
if(x >= 0) if(x > 0) y = 1; else y = 0; else y = -1;
y = 0; if(x >= 0) if(x > 0)y = 1; else y = -1;
if(x >= 0) { if(x > 0) y = 1; else y = 0; } else y = -1;
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