字符替换

#include <stdio.h>
#include <Conio.h>
main(){
      int input;
      while((input=getchar())!=EOF){
         if(input == ‘\n‘){
                     printf("\\n");
                     printf("\n");
                     continue;
                  }
         if(input == ‘ ‘){
                     while((input=getchar())==‘ ‘){
                                                   continue;
                                                }
                     if(input == ‘\n‘){
                         printf(" \\n");
                     }else putchar(‘ ‘);
                  }
         if(input == ‘\t‘){
                     printf("\\t");
                     continue;
                  }
         if(input == ‘\\‘){
                     printf("\\\\");
                     continue;
                  }
         putchar(input);
      }
      getch();
}