Code

 Header...
//
// Demonstrate passing an array to functions
//

#define VALUES 4
// Note: the two forms of the prototype: one with the
// dimension, which is ignore, and one without. 
void setuparray (int input[VALUES]);
void printarray (int output[]);

 int main(){
   ... 

»  int num[VALUES];

»  setuparray(num);
»  printarray(num);

»  return 0;
}

 void setuparray(int input[VALUES]){
   ... 

»  int i;
  // Initialise to uninteresting values
»  for (i=0; i<VALUES; ++i) 
    inputi=i;
}

 void printarray(int output[]){
   ... 

»  int i;

»  for (i=0; i<VALUES; ++i) {
»    printf("%d\n", outputi);
  }
}