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#include<stdio.h>
#define MAXLINE 1000 /* maximum input line length */
int max;
char line[MAXLINE];
char longest[MAXLINE];
int getline(char line[], int maxline);
void copy(char to[], char from[]);
/* print the longest input line */
int main()
{
int len; /* current line length */
extern int max; /* maximum length seen so far */
extern 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("Longest Line from input is:\n%s\n",longest);
printf("Line length is: %d characters\n",max);
return 0;
}
/*getline: read a line into s, return length */
int getline(char s[], int lim)
{
int c,i;
extern char line[];
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;
extern char line[], longest[];
i=0;
while((to[i]=from[i]) != '\0')
++i;
}
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