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Function Declarations

There are three ways to declare a function in C:

  1. A function with no parameters is declared like this:

     int foo(void) { /* body */}  // note that void is needed

  2. A function with a fixed number of parameters is declared like this:

      void bar(int p1, double p0) { /* body */}

  3. And last but not least a function with variable parameter lists:

    
  double func(int p1, int p2, ...) { /* body */}