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- #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 */
- main()
- {
- 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);
- 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;
- }
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