sixteenth exercise

1-16.c

@@ -0,0 +1,45 @@
+#include <stdio.h>
+#define MAXLINE 1000 /* maximum input line length */
+
+/* ggetline: read a line into 'line', return length */
+int ggetline(char line[], int maxline){
+  int c, i;
+  for (i=0; (c=getchar()) != EOF && c!='\n'; ++i){
+    if (i<maxline-1){
+      line[i]=c;
+    }
+    else if (i==maxline-2){
+      line[i]='\n';
+      line[i+1]='\0';
+    }
+  }
+  return i;
+}
+
+/* copy: copy 'from' into 'to'; asume to is big enough */
+void copy(char to[], char from[]){
+  int i;
+  i = 0;
+  while((to[i] = from[i]) != '\0'){
+    ++i;
+  }
+}
+
+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 = ggetline(line, MAXLINE)) >0){
+    if (len > max){
+      max = len;
+      copy(longest, line);
+    }
+  }
+  if (max > 0){ /* there was a line */
+    printf("%s\n", longest);
+    printf("length: %d\n", max);
+  }
+  return 0;
+}