[unix-history] / usr / lib / learn / C / L33.1a

#print
Write a main program which counts the number of command-line arguments
it has which begin with the letter 'b'.  Print the
result in decimal.  Compile and test it as usual.
Then type "ready".
#user
a.out abc bcd efg rpq b bbvd  >xxx
grep 3 xxx >/dev/null
#succeed
/*  a possible solution */
main(argc, argv)
char *argv[];
{
	int i, k;

	for(i=k=0; i<argc; i++)
		if (argv[i][0] == 'b')
			k++;
	printf("%d\n", k);
}
#log
#next
37.1a 10
Commit	Line	Data
d6c1f319 C	1	#print
	2	Write a main program which counts the number of command-line arguments
	3	it has which begin with the letter 'b'. Print the
	4	result in decimal. Compile and test it as usual.
	5	Then type "ready".
	6	#user
	7	a.out abc bcd efg rpq b bbvd >xxx
	8	grep 3 xxx >/dev/null
	9	#succeed
	10	/* a possible solution */
	11	main(argc, argv)
	12	char *argv[];
	13	{
	14	int i, k;
	15
	16	for(i=k=0; i<argc; i++)
	17	if (argv[i][0] == 'b')
	18	k++;
	19	printf("%d\n", k);
	20	}
	21	#log
	22	#next
	23	37.1a 10