init commit

C_BOOK/1.9-arrays/main.c

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+#include <stdio.h>
+#define MAXLINE 1000
+
+int getline( char line[], int maxline);
+void copy(char to[], char from[]);
+
+/* print 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;
+}
+