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/* Demonstrates a simple function */ 
#include  
 
long cube(long x); 
 
long input, answer; 
 
int main( void ) 
{ 
   printf("Enter an integer value: "); 
   scanf("%d", &input); 
   answer = cube(input); 
   /* Note: %ld is the conversion specifier for */ 
   /* a long integer */ 
   printf("\nThe cube of %ld is %ld.\n", input, answer); 
 
   return 0; 
} 
 
/* Function: cube() - Calculates the cubed value of a variable */ 
long cube(long x) 
{ 
   long x_cubed; 
 
   x_cubed = x * x * x; 
   return x_cubed; 
}