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-
- #include <stdio.h>
- #include <time.h>
- #include <stdlib.h>
-
- #define ARRAY_SIZE 1000
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- int test_array[ARRAY_SIZE];
-
- int compare(int *a,int *b)
- {
- return(*a-*b);
- }
-
- main()
- {
- int i;
- time_t start_time;
- time_t stop_time;
-
- for ( i=0 ; i<ARRAY_SIZE ; i++ )
- test_array[i] = rand();
- time( &start_time );
- qsort( test_array, ARRAY_SIZE, sizeof(int), compare );
- time( &stop_time );
- printf( "%f seconds elapsed.\n",
- difftime(stop_time,start_time) );
- for ( i=0; i<ARRAY_SIZE-1 ; i++ )
- if ( test_array[i] > test_array[i+1] )
- printf( "Mismatch at position %d\n", i );
- }
-
- A Driver Program to Test Quicksort Performance
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