Cairo Error calling function: Expected 'function_name' to be a struct. Found: 'function'.

If you run the following code, you will get the following error : Expected 'testFuncB' to be a struct. Found: 'function'.

return (res=testFuncB(x))

^**********^

func main():

testFuncA()

return ()

end



#This function calls another function to add one

func testFuncA() -> (res : felt):

let x = 1

return (res=testFuncB(x))

end



#This function adds one to the input

func testFuncB(input : felt) -> (res : felt):

return (input+1)

end

If you unpack the call to testFuncB and set the variable in it's own line, you will solve the problem.

func main():

testFuncA()

return ()

end



#This function calls another function to add one

func testFuncA() -> (res : felt):

let x = 1

**let (res) = testFuncB(x)**

return (res=res)

end



#This function adds one to the input

func testFuncB(input : felt) -> (res : felt):

return (input+1)

end

ㅤ This answer was originally posted on Triality

Looking at the documentation, there seems to be two possibilities

ㅤ This answer was originally posted on Triality