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

#include <stdio.h>
#define BUFSIZE 20 /* maximun input line size */

int atoi(char []); /* converts string to int */
int getline(char [], int); /* reads string from input */



void main() {
	char buf[BUFSIZE];

	if (getline(buf, BUFSIZE) > 0) 
		printf("You have entered string %s and it was converted to %d\n", buf, atoi(buf));
}


/* 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;
}

/* getline: read a line into s,  return length */ 

int getline(char s[], int lim) 
{
        int c, i;

        for (i = 0; i < lim-1 &&(c=getchar())!= EOF && c != '\n'; ++i)
                s[i] = c;
        if (c == '\n') {
                s[i] = c;
                ++i;
        }
        s[i] = '\0';
        return i;
}