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Student poll program

Forty student where asked to rate the quality of the food in the student cafeteria on a scale from 1 to 10 .Place the 40 responses in an integer array and summarize the results of the poll.

#include <stdio.h>
#define RESPONSE_SIZE 40
#define FREQUENCY_SIZE 11 // start from 1 to 10 and neglect location 0

int main()
{
int answer, rating, frequency[ FREQUENCY_SIZE ] = { 0 };
int responses[ RESPONSE_SIZE ] =
{ 1, 2, 6, 4, 8, 5, 9, 7, 8, 10,
1, 6, 3, 8, 6, 10, 3, 8, 2, 7,
6, 5, 7, 6, 8, 6, 7, 5, 6, 6,
5, 6, 7, 5, 6, 4, 8, 6, 8, 10 };

for ( answer = 0; answer <= RESPONSE_SIZE - 1; answer++ )
++frequency[ responses [ answer ] ];

printf( "%s%17s\n", "Rating", "Frequency" );

for ( rating = 1; rating <= FREQUENCY_SIZE - 1; rating++ )
printf( "%6d%17d\n", rating, frequency[ rating ] );

return 0;
}