Someone

main()
{
int c, bk, tb, nl;
bk=0;
tb=0;
nl=0;
while ((c = getchar()) !=EOF) {
if (c == ' ')
++bk;
if (c == '\t')
++tb;
if (c == '\n')
++nl;}
printf("%d\t%d\t%d\n", bk, tb, nl);
return 0;
}