testcrc32oldfile.c

该源码演示了如何计算字串的CRC32及文件的CRC32

/**********************************
** testcrc32newfile.c
* houchao [e-mail]  
* 2003,9,12 by houchao
***********************************/
#include<sys/types.h>
#include<time.h>
#include<stdio.h>
#include<stdlib.h>
#include"crc32.h"


int main(int argc,char *argv[])
{
	 int	i;
	FILE   *fp;
	unsigned long crc;

	if (argc < 2) {
		//crc = crc32( stdin );
		//printf("crc32 = %08lx for <stdin>\n", crc);
	} else {
		for (i=1; i<argc; i++) {
			if ( (fp=fopen(argv[i],"rb")) == NULL ) {
				printf("error opening file \"%s\"!\n",argv[i]);
			} else {
				crc = getfilecrc( fp );
				printf("crc32 = %08lx for \"%s\"\n",
					crc, argv[i]);
				fclose( fp );
			}
		}
	}
	return( 0 );
        
}