tenth exercise

1-10.c

@@ -0,0 +1,23 @@
+#include <stdio.h>
+int main() {
+  int c;
+  while ((c=getchar()) != EOF){
+    if (c == '\t'){
+      putchar('\\');
+      putchar('t');
+      continue;
+    }
+    if (c == '\b'){
+      putchar('\\');
+      putchar('b');
+      continue;
+    }
+    if (c == '\\'){
+      putchar('\\');
+      putchar('\\');
+      continue;
+    }
+    putchar(c);
+  }
+  return 0;
+}