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Pascal的请进.function getnum:longint;
var c:char;
x:longint=0;
begin
read(c);
while not (c in num) do read(c);
while c in num do
begin
x:=x*10+ord(c)-48;
read(c);
end;
exit(x);
end;
用上面的函数代替read.每次读入一个数.
num:set of char=['0'..'9'];
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