下面哪个程序是语法类型正确的？ A: foo::IO() foo=do line-getLine letn=readline::Int putStrLnn B: foo::IOString foo=do line-getLine letn=readline::Int putStrLnline C: foo::IO() foo=do line-getLine letn=readline::Int putStrLnn D: foo::IO() foo=do line-getLine letn=readline::Int putStrLn(shown)

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2022-06-05

下面哪个程序是语法类型正确的？ A: foo::IO() foo=do line-getLine letn=readline::Int putStrLnn B: foo::IOString foo=do line-getLine letn=readline::Int putStrLnline C: foo::IO() foo=do line-getLine letn=readline::Int putStrLnn D: foo::IO() foo=do line-getLine letn=readline::Int putStrLn(shown)

下面哪个程序是语法类型正确的？
A: foo::IO() foo=do line-getLine letn=readline::Int putStrLnn
B: foo::IOString foo=do line-getLine letn=readline::Int putStrLnline
C: foo::IO() foo=do line-getLine letn=readline::Int putStrLnn
D: foo::IO() foo=do line-getLine letn=readline::Int putStrLn(shown)

答案：

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