there code i dont understand 1 line in it i dont understand
Code:
#include <stdio.h>
#define MAXLINE 1000 /* maximum input line length */
int getline(char line[], int maxline);
void copy(char to[], char from[]);
/* print the longest input line */
int main(void)
{
int len; /* current line length */
int max; /* maximum length seen so far */
char line[MAXLINE]; /* current input line */
char longest[MAXLINE]; /* longest line saved here */
max = 0;
while ((len = getline(line, MAXLINE)) > 0)
if (len > max) {
max = len;
copy(longest, line);}
if (max > 0) /* there was a line */
printf("%s", longest);
getchar();
return 0;
}
/* 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;
}
/* copy: copy 'from' into 'to'; assume to is big enough */
void copy(char to[], char from[])
{
int i;
i = 0;
while( (to[i] = from[i]) != '\0')
++i;
}
is bigger than zero means when he reached EOF but EOF is -1 right shouldnt that be -1 not 0 ?also the int c in 2nd loop why its using s[i]=c and he didnt in the for loop set it anything to the array s ?