C 文件处理中的编译错误

Question

#include<stdio.h>
#include<conio.h>
FILE *fp;
int main()
{
  int val;
  char line[80];
  fp=fopen("\Users\P\Desktop\Java\a.txt","rt");
  while( fgets(line,80,fp)!=NULL )
   {
     sscanf(line,"%d",&val);
     printf("val is:: %d",val);
   }
   fclose(fp);
   return 0;
}

为什么 fp=fopen("\Users\P\Desktop\Java\a.txt","rt") 行出现编译错误？

Answer 1

转义反斜杠。

fp=fopen("\\Users\\P\\Desktop\\Java\\a.txt","rt");