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/**************************************************************************
*
* Purpose: Give the exponent of a number.
* Author: M. J. Leslie
* Date: 05-Apr-94
*
**************************************************************************/
#include <stdio.h>
int exponent(int);
main(int argc,char *argv[])
{
int user_val;
char *progname;
progname=argv[0];
/* have we got one command line
parameter? */
if (argc != 2)
{
printf("%s syntax is:\n", progname);
printf("\t%s num - where num is the number you ", progname);
printf("require the exponent of.\n");
exit();
}
/* y. Put it in a suitable variable */
user_val = atoi(argv[1]);
/* get and O/P its exponent. */
printf(" The exponent of %d is %d \n", user_val, exponent(user_val));
}
/************************************************************************
Get the exponent of an integer number.
*************************************************************************/
int exponent(int input)
{
int count, result=1;
/* 'result *= count' means 'result = result * count'
to fortran programmers... */
for(count=1; count<=input; count++) result *= count;
return result;
}
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