function read_file(file)
local data = io.open(file, "r")
for char in data:lines() do
local num1 = 0
local num2 = 0
--Print statement
if char:sub(1, 6) == "print>" then
print(char:sub(7))
end
--Setting numbers command
if char:sub(1, 5) == "num1>" then
num1 = char:sub(6)
end
if char:sub(1, 5) == "num2>" then
num2 = char:sub(6)
end
--The add command
if char:sub(1, 5) == "add()" then
print(num1 + num2)
end
end
data:close()
end
function run()
while true do
print("Open a file")
file = io.read()
print("")
print("Opening file: "..file)
print("")
read_file(file)
print("")
print("Successfully compiled\n")
end
end
run()
我的“设置数字命令”不起作用,变量num1和num2设置为0并且它们不会改变所以我被困了大约30分钟思考如何解决它而我无法想到如何修复它
答案 0 :(得分:2)
变量num1和num2设置为0,它们不会改变
因为你在循环开始时将它们重置为0.
改变这个:
for char in data:lines() do
local num1 = 0
local num2 = 0
...
对此:
local num1 = 0
local num2 = 0
for char in data:lines() do
...
顺便说一下,你可以替换它:
local data = io.open(file, "r")
for char in data:lines() do
...
end
data:close()
有了这个,它做了同样的事情:
for lines in io.lines(file) do
...
end