seventeenth exercise - not sure about this one

1-17.c

@@ -0,0 +1,37 @@
+#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-2){
+      line[i]=c;
+    }
+    else if(i==maxline-1){
+      line[i]='\0';
+      return i;
+    }
+  }
+  line[i]='\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 */
+  char line[MAXLINE]; /* current input line */
+  char longline[MAXLINE]; /* line to print */
+  while ((len = ggetline(line, MAXLINE)) >0){
+    copy(longline, line);
+    printf("%s\n", longline);
+  }
+  return 0;
+}