1 files changed, 58 insertions, 0 deletions
diff --git a/longest_line.c b/longest_line.c
new file mode 100644
index 0000000..58f2a72
--- /dev/null
+++ b/longest_line.c
@@ -0,0 +1,58 @@
+#include<stdio.h>
+#define MAXLENGTH 1000
+
+int get_line(char line[], int maxlength);
+void copy(char to[], char from[]);
+
+/*
+ * MAIN
+ * Prints longest line in STDIN.
+ */
+main() {
+    int len; // current line length
+    int max; // maximum length seen so far
+    char line[MAXLENGTH]; // current input line
+    char longest[MAXLENGTH]; // longest line saved here
+
+    max = 0;
+    while ((len = get_line(line, MAXLENGTH)) > 0)
+        if (len > max) {
+            max = len;
+            copy(longest, line);
+        }
+    if (max > 0) // there was a line
+        printf("%d\t", max);
+        printf("%s", longest);
+    return 0;
+}
+
+/*
+ * GET_LINE
+ * Read STDIN into LINE up to MAXLENGTH and return its length. 
+ * Returns the length of a the line.
+ */
+int get_line(char line[], int maxlength) {
+    int c, i;
+
+    for (i = 0; i < maxlength - 1 && (c = getchar()) != EOF && c != '\n'; ++i)
+        line[i] = c;
+    if (c == '\n') {
+        line[i] = c;
+        ++i;
+    }
+    line[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;
+}
+