View Compilation Error

0_0_18826616_10925.cpp:1:33: error: stray '#' in program
 3456789101112131415161718192021 #include<stdio.h> int main() {     int i,j,n,c,y;     while(scanf("%d",&n)!=EOF){         y=1;         for(i=1;i<n;i++){             y=(y+1)*2;         }         printf("%d\n",y);     }     return 0;  } 
                                 ^
0_0_18826616_10925.cpp:1:1: error: expected unqualified-id before numeric constant
 3456789101112131415161718192021 #include<stdio.h> int main() {     int i,j,n,c,y;     while(scanf("%d",&n)!=EOF){         y=1;         for(i=1;i<n;i++){             y=(y+1)*2;         }         printf("%d\n",y);     }     return 0;  } 
 ^