What is the correct syntax for declaring a function that returns an integer? 

  • int functionName; 
  • functionName: int; 
  • int functionName() 
  • int: functionName()
In C++, to declare a function that returns an integer, the correct syntax is "int functionName()". The type "int" signifies that the function's return type is an integer, and the parentheses "()" indicate it's a function declaration. Actual implementation or body of the function would follow the declaration.
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