sum():
function sum(...rest) { if (rest.length===0){ return 0; } else { var sum = 0 for (var i=0;i<rest.length;i++) { sum= sum + rest[i]; } return sum; } }
求圆面积:
var a; if (arguments.length ===2) { a = pi * r * r; return a; } else if (arguments.length === 1) { a = 3.14 * r * r; return a; } else { return 0; }
max()函数:
if (a > b) { return a; } else { return b; }
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Melaleucake
sum():
求圆面积:
max()函数: