View Compilation Error

0_0_37340793_25508.cpp: In function 'int main()':
0_0_37340793_25508.cpp:5:1: error: expected initializer before 'while'
 while(~scanf("%d,&n")&&n)
 ^
0_0_37340793_25508.cpp:18:1: error: expected '}' at end of input
 }
 ^