C语言print语句中的转义序列

// 
#include <stdio.h>

int main() {

   char  ch1;
   char  ch2;
   char  ch3;
   char  ch4;

   ch1 = '/t';      
   ch2 = '/n';


   printf( "Test for tabspace %c and a newline %c will start here", ch1, ch2);
}