/*  Example: Convert String to Integer
	Source: K&R2, p43 (see also better version on p.61)
	Driver: Peter Brusilovsky 
*/

#include <stdio.h>

int atoi(char s[]);

main() {
	char p[] = "193";

	printf("%s is equal to %d\n", p, atoi(p));
	return 0;
}


/* atoi: converts s to integer */ 

int atoi(char s[]) 
{
	int i, n;

	n = 0;
	for (i = 0; s[i] >= '0' && s[i] <= '9'; ++i)
		n = 10 * n + (s[i] - '0');
	return n;
}