fig06_11.c

C程序设计经典教程第5版程序示例,比较适合初级c语言的学生

/* Fig. 6.11: fig06_11.c
   Static arrays are initialized to zero */
#include <stdio.h>

void staticArrayInit( void );    /* function prototype */
void automaticArrayInit( void ); /* function prototype */

/* function main begins program execution */
int main( void )
{
   printf( "First call to each function:\n" );
   staticArrayInit();
   automaticArrayInit();

   printf( "\n\nSecond call to each function:\n" );
   staticArrayInit();
   automaticArrayInit();
   
   return 0; /* indicates successful termination */

} /* end main */
 
/* function to demonstrate a static local array */
void staticArrayInit( void )
{
   /* initializes elements to 0 first time function is called */
   static int array1[ 3 ];
   int i; /* counter */

   printf( "\nValues on entering staticArrayInit:\n" );

   /* output contents of array1 */
   for ( i = 0; i <= 2; i++ ) {
      printf( "array1[ %d ] = %d  ", i, array1[ i ] );
   } /* end for */

   printf( "\nValues on exiting staticArrayInit:\n" );

   /* modify and output contents of array1 */
   for ( i = 0; i <= 2; i++ ) {
      printf( "array1[ %d ] = %d  ", i, array1[ i ] += 5 );
   } /* end for */
   
} /* end function staticArrayInit */

/* function to demonstrate an automatic local array */
void automaticArrayInit( void )
{
   /* initializes elements each time function is called */
   int array2[ 3 ] = { 1, 2, 3 };
   int i; /* counter */

   printf( "\n\nValues on entering automaticArrayInit:\n" );

   /* output contents of array2 */
   for ( i = 0; i <= 2; i++ ) {
      printf("array2[ %d ] = %d  ", i, array2[ i ] );
   } /* end for */

   printf( "\nValues on exiting automaticArrayInit:\n" );

   /* modify and output contents of array2 */
   for ( i = 0; i <= 2; i++ ) {
      printf( "array2[ %d ] = %d  ", i, array2[ i ] += 5 );
   } /* end for */

} /* end function automaticArrayInit */



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