Function Calls (integer function called as void function from main)

#1

https://ide.codingblocks.com/s/22746

int replaceSum(node*root)

In this function the return type is integer but when the function is called from the main there is no variable to accept it’s data. Is it legal? How?

#2

Yes, it is legal. If you are willing to use the value returned by the function then you can get that value in some variable, but if you just want to call a function and don’t want to use its value… you can just call the function without initialising it to a variable.

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