[Algorithms] C Program to Print Longest Input Line

#include <stdio.h> #define MAXLINE 1000 int getLine(char *, int); void copy(char *, char *); /* print longest input line */ int 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') { /* last character isn't '\n' the string length is longer than buffer */ s[i++] = c; } 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++; } return; }