nineteenth exercise

1-19.c

@@ -0,0 +1,32 @@
+#include <stdio.h>
+#define MAXLINE 1000
+
+int ggetline(char line[], int maxline){
+  int c, i;
+  for(i=0; i<maxline-1 && (c=getchar()) != EOF && c != '\n'; i++){
+    line[i]=c;
+  }
+  line[i]='\0';
+  return i;
+}
+
+void reverse(char s[]){
+  int i;
+  for(i=0; s[i] != '\0'; i++){
+    ;
+  }
+  while(i>=0){
+    putchar(s[i]);
+    i--;
+  }
+  putchar('\n');
+}
+
+int main(){
+  char line[MAXLINE];
+  int len;
+  while((len=ggetline(line, MAXLINE))>0){
+    reverse(line);
+  }
+  return 0;
+}