1-16HEADmaster

1 files changed, 43 insertions, 0 deletions

diff --git a/1/16.c b/1/16.c
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index 0000000..f276e88
--- /dev/null
+++ b/1/16.c
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+/*
+        Exercise 1-16. Revise the main routine of the longest-line program so it will
+        correctly print the length of arbitrarily long input lines, and as much as
+        possible of the text.
+        ===
+*/
+
+#include <stdio.h>
+
+#define MAX 1000        /* max line length */
+
+/* read line into string, l, of length size, s, return length */
+int readline(char l[], int s) {
+        int c, i;
+        for (i=0; i<s-1 && (c=getchar())!=EOF && c!='\n'; i++)
+                l[i]=c; 
+        if (c=='\n') l[i++]=c;
+        l[i]='\0';
+        return i;
+}
+
+/* copy string1, s1, to string2, s2 */
+void copy (char s1[], char s2[]) {
+        int i=0;
+        while ((s2[i]=s1[i])!='\0') i++;
+}
+
+int main () {
+        int l, m, c;                            /* length, max, character */
+        char line[MAX], lngst[MAX];     /* line, longest */
+
+        m=0;
+        while (l=readline(line, MAX)) {         /* for each line */
+                if (line[l-1]!='\n')                    /* if line exceeds buffer */
+                        while ((c=getchar())!=EOF && c!='\n')
+                                l++;                                    /* count remaining characters */
+                if (l>m) {                                              /* if longest */
+                        m=l; copy(line, lngst);         /* record it */
+                }
+        }
+        if (m)                                                  /* if lines were processed, print longest */
+                printf("%d: %s\n", m-1, lngst); 
+}