C 控制符

#include <stdio.h> 
  
int main(void) 
{ 
  printf("This is a test.\nThis is the second line.\n"); 
  return 0; 
} 

#include <stdio.h> 
  
int main(void) 
{ 
  printf("\"This is a test.\"\nShakespeare\n"); 
  return 0; 
} 

#include <stdio.h> 

int main(void) 
{ 
  printf("Be careful!!\n\a"); 
  return 0; 
} 

    #include <stdio.h>                // Include the header file for input and output 

    int main(void) 
    { 
      printf("Hi there!\n\n\nThis program is a bit\n"); 
      printf(" longer than the others.\n"); 
      printf("\nThis is a test.\n\n\n\a\a"); 
      printf("Hey!! What was that???\n\n"); 
      printf("\t1.\tA control character?\n"); 
      printf("\n\t\tThis is a new line?\n\n"); 
      return 0; 
    }