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我想检查两个字符串是否相同,我不断收到一个错误,说操作数是不正确的。 “=”的两边都是StateAbbreviation类型,错误在哪里?在你的代码“无效的操作数类型为操作数=”ada
with Ada.Text_IO, Ada.Integer_Text_IO;
use Ada.Text_IO, Ada.Integer_Text_IO;
procedure ElectionPrediction is
MaxCandidates: constant Integer := 100;
subtype StateAbbreviation is String (1..2);
subtype Initials is String (1..2);
type CandidateInfo is record
CandidateInitials: Initials;
CandidateScore: Integer;
end record;
type ScoreArray is array (1..MaxCandidates) of CandidateInfo;
Score: ScoreArray;
CurrentState, HomeState: StateAbbreviation;
CandidateName: Initials;
function CalculatePointsFromState(CurrentState: StateAbbreviation; CandidateState: StateAbbreviation) return Integer is
Total: Integer := 0;
temp: Integer := 0;
type ScoreArray is array (1..MaxCandidates) of CandidateInfo;
type NewEngland is array (1..6) of StateAbbreviation;
type NorthEast is array (1..5) of StateAbbreviation;
type SouthEast is array (1..12) of StateAbbreviation;
type Lakes is array (1..6) of StateAbbreviation;
type Central is array (1..8) of StateAbbreviation;
type West is array (1..8) of StateAbbreviation;
type Pacific is array (1..5) of StateAbbreviation;
begin
NewEngland := ("ME", "NH", "VT", "MA", "CT", "RI");
NorthEast := ("NY", "PA", "NJ", "DE", "MD");
SouthEast := ("VA", "NC", "SC", "GA", "FL", "AL", "MS", "TN", "KY", "WV", "AR", "LA");
Lakes := ("OH", "MI", "IN", "IL", "WI", "MN");
Central := ("IA", "MO", "ND", "SD", "NE", "KS", "OK", "TX");
West := ("MT", "WY", "CO", "NM", "AZ", "UT", "ID", "NV");
Pacific :=("WA", "OR", "CA", "AK", "HI");
if CandidateState = CurrentState then Total := Total + 50;
end if;
for I in NewEngland'range loop
**if CurrentState = NewEngland(NewEngland'First + I) then temp := temp + 1; end if;
if CandidateState = NewEngland(NewEngland'First + I) then temp := temp + 1; end if;**
end loop;
if temp = 2 then return Total + 20;
end if;
return 0;
end CalculatePointsFromState;
end ElectionPrediction;
我认为你应该先解决你的其他错误 – egilhh
一个观察:'为我在NewEngland'range循环'...我从'NewEngland'First'开始,所以你想简化你的数组索引... –